I 
114TH CONGRESS 
1ST SESSION H. R. 3748 
To require the Director of the Congressional Budget Office to calculate 
a carbon score for each bill or resolution. 
IN THE HOUSE OF REPRESENTATIVES 
OCTOBER 9, 2015 
Mr. HUFFMAN (for himself, Mr. POCAN, Ms. MATSUI, and Mr. LOWENTHAL) 
introduced the following bill; which was referred to the Committee on 
Rules, and in addition to the Committee on the Budget, for a period to 
be subsequently determined by the Speaker, in each case for consider-
ation of such provisions as fall within the jurisdiction of the committee 
concerned 
A BILL 
To require the Director of the Congressional Budget Office 
to calculate a carbon score for each bill or resolution. 
Be it enacted by the Senate and House of Representa-
tives of the United States of America in Congress assembled, 
SECTION 1. SHORT TITLE. 
This Act may be cited as the ‘‘Carbon Pollution 
Transparency Act of 2015’’. 
SEC. 2. DEFINITIONS. 
In this Act: 
VerDate Sep 11 2014 
02:52 Oct 15, 2015
Jkt 059200
PO 00000
Frm 00001
Fmt 6652
Sfmt 6201
E:\BILLS\H3748.IH
H3748
SSpencer on DSK4SPTVN1PROD with BILLS
(1) CARBON SCORE.—The term ‘‘carbon score’’ 
means the projected net greenhouse gas emissions 
that would result— 
(A) from the enactment and implementa-
tion of a bill or resolution; and 
(B) if the amounts authorized to be appro-
priated, or otherwise made available, in the bill 
or resolution were fully appropriated. 
(2) DIRECTOR.—The term ‘‘Director’’ means 
the Director of the Congressional Budget Office. 
(3) GREENHOUSE GAS.—The term ‘‘greenhouse 
gas’’ has the meaning given the term in section 
211(o)(1) of the Clean Air Act (42 U.S.C. 
7545(o)(1)). 
(4) NET
GREENHOUSE
GAS
EMISSIONS.—The 
term ‘‘net greenhouse gas emissions’’ means the net 
quantity of all greenhouse gases emitted into the at-
mosphere, including emissions by sources and re-
movals by sinks, where the total quantity of emis-
sions for each gas is expressed as a carbon dioxide 
equivalent. 
SEC. 3. CARBON SCORE. 
(a) IN GENERAL.—In carrying out section 402 of the 
Congressional Budget Act of 1974 (2 U.S.C. 653), the Di-
rector shall include in the analysis submitted to the appro-
VerDate Sep 11 2014 
02:52 Oct 15, 2015
Jkt 059200
PO 00000
Frm 00002
Fmt 6652
Sfmt 6201
E:\BILLS\H3748.IH
H3748
SSpencer on DSK4SPTVN1PROD with BILLS
priate committee of Congress the carbon score of each 
public bill or resolution. 
(b) NET GREENHOUSE GAS EMISSIONS BASELINE.— 
In calculating the carbon score under subsection (a), the 
Director shall base any calculation of the increase or de-
crease of the level of greenhouse gas emissions on a com-
parison with the level of greenhouse gas emissions occur-
ring under current law. 
(c) SCOPE OF CALCULATED EMISSIONS.—In calcu-
lating the carbon score under subsection (a), the Director 
shall consider all likely changes in net greenhouse gas 
emissions, including— 
(1) any changes to net greenhouse gas emis-
sions that would directly result from activities re-
quired to carry out the bill or resolution; and 
(2) any changes to net greenhouse gas emis-
sions that would— 
(A) indirectly result from activities re-
quired to carry out the bill or resolution; and 
(B) not otherwise have occurred. 
(d) ESTABLISHED BEST PRACTICES.—In calculating 
the carbon score under subsection (a), the Director shall, 
to the maximum extent practicable, use established best 
practices for estimating emissions, such as— 
(1) lifecycle analysis; and 
VerDate Sep 11 2014 
02:52 Oct 15, 2015
Jkt 059200
PO 00000
Frm 00003
Fmt 6652
Sfmt 6201
E:\BILLS\H3748.IH
H3748
SSpencer on DSK4SPTVN1PROD with BILLS