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                                                                    EXHIBIT 10.8

                            CERTIFICATE OF AMENDMENT
                                     TO THE
                       CERTIFICATE OF LIMITED PARTNERSHIP
                                       OF
                 LAKEHEAD PIPE LINE COMPANY, LIMITED PARTNERSHIP

         The undersigned, desiring to amend the Certificate of Limited
Partnership of Lakehead Pipe Line Company, Limited Partnership pursuant to the
provisions of Section 17-202 of the Revised Uniform Limited Partnership Act of
the State of Delaware, does hereby certify as follows:

         FIRST: The name of the Limited Partnership is Lakehead Pipe Line
Company, Limited Partnership.

         SECOND: Article 1 of the Certificate of Limited Partnership shall be
amended as follows:

"The name of the limited partnership is Enbridge Energy, Limited Partnership"

         THIRD: Article 3 of the Certificate of Limited Partnership shall be
amended as follows:

"The name and business address of the General Partner is as follows:

General Partner                                 Address
Enbridge Energy Company, Inc.                   21 West Superior Street
                                                Duluth, MN 55802-2067"

         IN WITNESS WHEREOF, the undersigned executed this Amendment to the
Certificate of Limited Partnership on this 28th day of August, 2001.

                                         General Partner
                                         Enbridge Energy Company, Inc.

                                         By /s/  S. MARK CURWIN
                                                 S. Mark Curwin
                                                 Corporate Secretary<PAGE>
                                                                   EXHIBIT 10.10

                                  AMENDMENT TO

             AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP
                                       OF
                 LAKEHEAD PIPE LINE COMPANY, LIMITED PARTNERSHIP

         This amendment to the Amended and Restated Agreement of Limited
Partnership of Lakehead Pipe Line Company, Limited Partnership (the
"Partnership") is entered into by and among Enbridge Energy Company, Inc.
(formerly Lakehead Pipe Line Company, Inc.), a Delaware corporation ("the
General Partner") as General Partner of the Partnership, and Lakehead Pipe Line
Partners, L.P., a Delaware limited partnership (the "Investor Partnership") as
the Limited Partner of the Partnership, as hereinafter provided.

         WHEREAS, the General Partner and the other parties thereto entered into
that certain Amended and Restated Agreement of Limited Partnership of the
Partnership dated as of December 27, 1991 (the "Agreement");

         WHEREAS, the General Partner has changed its name to "Enbridge Energy
Company, Inc." and desires to change the name of the Partnership to "Enbridge
Energy, Limited Partnership", and

         WHEREAS, Article XIV of the Agreement permits the General Partner to
amend the Agreement to change the name of the Partnership and to take certain
other actions which, in the sole discretion of the General Partner, do not
adversely affect the Limited Partner in any material respect, without the
consent of Limited Partner.

         NOW THEREFORE, in order to change the name of Partnership and to
reflect the change in name of the General Partner and the Investor Partnership,
the General Partner does hereby amend the Amended and Restated Agreement of
Limited Partnership of the Partnership as follows:

         1.  The first sentence of Section 1.2 is hereby amended to read as
             follows:

             "The name of the Partnership shall be Enbridge Energy, Limited
             Partnership."

         2.  The definition of "Company" in Article II is hereby amended in its
             entirety to read as follows:

             ""Company" means Enbridge Energy Company, Inc., a Delaware
             corporation."

         3.  The definition of "Investor Partnership" in Article II is hereby
             amended in its entirety to read as follows:

             ""Investor Partnership" means, as of September 5, 2001, Enbridge
             Energy Partners, L. P., a Delaware limited partnership."

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                                                                               2

         4.  The definition of "Investor Partnership Agreement" in Article II is
             hereby amended in its entirety to read as follows:

             ""Investor Partnership Agreement" means the Amended and Restated
             Agreement of Limited Partnership of Enbridge Energy Partners, L.P.,
             as it may be amended, supplemented or restated from time to time."

         5.  The definition of "Partnership" in Article II is hereby amended in
             its entirety to read as follows:

             ""Partnership" means Enbridge Energy, Limited Partnership, a
             Delaware limited partnership established pursuant to this
             Agreement, and any successor thereto."

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                                                                               3

IN WITNESS WHEREOF, the parties hereto have hereunto set their hands as of the
28th day of August, 2001.

                                    GENERAL PARTNER:

                                    ENBRIDGE ENERGY COMPANY, INC.
                                    (formerly Lakehead Pipe Line Company, Inc.)

                                    By: /s/ S. MARK CURWIN
                                      ------------------------------------------
                                    Name:   S. Mark Curwin
                                    Title:  Corporate Secretary

                                    LIMITED PARTNER:

                                    Lakehead Pipe Line Partners, L.P.
                                    By: Enbridge Energy Company, Inc., General
                                        Partner

                                    By: /s/ MICHAEL J. MILLER
                                       -----------------------------------------
                                    Name:   Michael J. Miller
                                    Title:  Assistant Chief Accountant<PAGE>

                                                                    EXHIBIT  4.1

NUMBER                                                      CLASS A COMMON UNITS

EEP

THIS CERTIFICATE IS REGISTERED
IN NEW JERSEY AND NEW YORK

SEE REVERSE FOR CERTAIN DEFINITIONS                                     ENBRIDGE
                                                               CUSIP 29250R 10 6

                         ENBRIDGE ENERGY PARTNERS, L.P.
                  CERTIFICATE EVIDENCING CLASS A COMMON UNITS
             REPRESENTING CLASS A COMMON LIMITED PARTNER INTERESTS

THIS CERTIFIES THAT

IS THE REGISTERED HOLDER OF                                CLASS A COMMON UNITS,

representing Class A common limited partner interests in Enbridge Energy
Partners, L.P., a limited partnership formed under the laws of the State of
Delaware (the "Partnership"), transferable on the books of the Partnership, in
person or by duly authorized attorney, upon surrender of this Certificate
properly endorsed and accompanied by a properly executed application for
transfer of the Class A Common Units represented by the Certificate. This
Certificate and the Class A Common Units represented hereby are issued and shall
in all respects be subject to all of the provisions of the Agreement of Limited
Partnership of the Partnership, as amended or restated from time to time, to all
of which the holder, by acceptance hereof, assents, and to the additional terms
and provisions on the reverse side hereof.

Witness the facsimile signatures of the duly authorized officers of the General
Partner of the Partnership.

                                            Enbridge Energy Company, Inc.

Dated:

Countersigned and Registered;
Mellon Investor Services LLC
Transfer Agent and Registrar
By

                                     (SEAL)

                              By /s/ S. MARK CURWIN        By /s/ DAN C. TUTCHER

                              S. Mark Curwin               Dan C. Tutcher
Authorized Signature          Corporate Secretary          President

FURTHER CONDITIONS AND AGREEMENTS FORMING PART OF
THIS CERTIFICATE APPEAR ON THE REVERSE SIDE.<PAGE>
                                                                     EXHIBIT 4.3

                                  AMENDMENT TO

             AMENDED AND RESTATED AGREEMENT OF LIMITED PARTNERSHIP
                                       OF
                        LAKEHEAD PIPE LINE PARTNERS, L.P.

      This amendment to the Amended and Restated Agreement of Limited
Partnership of Lakehead Pipe Line Partners, L. P. (the "Partnership") is entered
into by and among Enbridge Energy Company, Inc. (formerly Lakehead Pipe Line
Company, Inc.), a Delaware corporation ("the General Partner") as General
Partner of the Partnership, and the Limited Partners of the Partnership, as
hereinafter provided.

      WHEREAS, the General Partner and the other parties thereto entered into
that certain Amended and Restated Agreement of Limited Partnership of the
Partnership dated as of April 15, 1997 (the "Agreement");

      WHEREAS, the General Partner has changed its name to "Enbridge Energy
Company, Inc." and desires to change the name of the Partnership to "Enbridge
Energy Partners, L.P." and the name of Lakehead Pipeline Company, Limited
Partnership, a Delaware limited partnership (the "Operating Partnership"), to
"Enbridge Energy, Limited Partnership"; and

      WHEREAS, Article XV of the Agreement permits the General Partner to amend
the Agreement to change the name of the Partnership and to take certain other
actions which, in the sole discretion of the General Partner, do not adversely
affect the Limited Partners in any material respect, without the consent of
Limited Partners.

      NOW THEREFORE, in order to change the name of Partnership and to reflect
the change in name of the General Partner and the Operating Partnership, the
General Partner does hereby amend the Amended and Restated Agreement of Limited
Partnership of the Partnership as follows:

      1.    The first sentence of Section 1.2 is hereby amended to read as
            follows:

            "The name of the Partnership shall be Enbridge Energy Partners,
            L.P."

      2.    The definition of "Company" in Article II is hereby amended in its
            entirety to read as follows:

            ""Company" means Enbridge Energy Company, Inc., a Delaware
            corporation."

      3.    The definition of "Operating Partnership" in Article II is hereby
            amended in its entirety to read as follows:

            ""Operating Partnership" means Enbridge Energy, Limited Partnership,
            a Delaware limited partnership established pursuant to the Operating
            Partnership Agreement, and any successor thereto."
<PAGE>
      4.    The definition of "Operating Partnership Agreement" in Article II is
            hereby amended in its entirety to read as follows:

            ""Operating Partnership Agreement" means the Agreement of Limited
            Partnership of Enbridge Energy, Limited Partnership, as it may be
            amended, supplemented or restated from time to time."

      5.    The definition of "Partnership" in Article II is hereby amended in
            its entirety to read as follows:

            ""Partnership" means Enbridge Energy Partners, L.P., a Delaware
            limited partnership established pursuant to this Agreement, and any
            successor thereto."
<PAGE>
IN WITNESS WHEREOF, the parties hereto have hereunto set their hands as of the
28th day of August, 2001.

                                  GENERAL PARTNER:

                                  ENBRIDGE ENERGY COMPANY, INC.
                                  (formerly Lakehead Pipe Line Company, Inc.)

                                  By: /s/ S. MARK CURWIN
                                     ------------------------------------------
                                  Name:   S. Mark Curwin
                                  Title:  Corporate Secretary

                                  LIMITED PARTNERS:

                                  All Limited Partners now and
                                  hereafter admitted as limited
                                  partners of the Partnership,
                                  pursuant to Powers of Attorney now
                                  and hereafter executed in favor of,
                                  and granted and delivered to, the
                                  General Partner

                                      By: Enbridge Energy Company, Inc., General
                                      Partner, as attorney-in-fact for all
                                      Limited Partners pursuant to the Powers of
                                      Attorney granted pursuant to Section 1.4
                                      of the Agreement.

                                       By: /s/ MICHAEL J. MILLER
                                          -------------------------------------
                                       Name:   Michael J. Miller
                                       Title:  Assistant Chief Accountant

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