**Exhibit
      31.1**





**CERTIFICATION
      PURSUANT TO**


**SECTION
      302 OF THE SARBANES-OXLEY ACT**








I,
      Nicholas Gerber, Chief Executive Officer of Victoria Bay Asset Management,
      LLC,
      general partner of United States Oil Fund, LP (the "Registrant"), certify
      that:





1.
      I have
      reviewed this report on Form 10-Q of the Registrant;





2.
      Based
      on my knowledge, this report does not contain any untrue statement of a material
      fact or omit to state a material fact necessary to make the statements made,
      in
      light of the circumstances  under which such statements were made, not
      misleading with respect to the period covered by this report;





3.
      Based
      on my knowledge, the financial statements, and other financial information
      included in this report, fairly present in all material respects the financial
      condition, results of operations, changes in net assets, and cash flows (if
      the
      financial statements are required to include a statement of cash flows) of
      the
      Registrant as of, and for, the periods presented in this report;





4.
      The
      Registrant's other certifying officer(s) and I are responsible for establishing
      and maintaining disclosure controls and procedures (as defined in Exchange
      Act
      Rules 13a-15(e) and 15d-15(e)) for the Registrant and have:





(a)  designed
      such
      disclosure controls and procedures, or caused such disclosure controls and
      procedures to be designed under our supervision, to ensure that material
      information relating to the Registrant, including its consolidated subsidiaries,
      is made known to us by others within those entities, particularly during the
      period in which this report is being prepared;





(b)  evaluated
      the
      effectiveness of the Registrant's disclosure controls and procedures and
      presented in this report our conclusions about the effectiveness of the
      disclosure controls and procedures, as of the end of the period covered by
      this
      report based on such evaluation; and





(c)  disclosed
      in this
      report any change in the Registrant's internal control over financial reporting
      that occurred during  the Registrant's most recent fiscal quarter that
      has materially affected, or is reasonably likely to materially affect, the
      Registrant's internal control over financial reporting; and





5.
      The
      Registrant's other certifying officer(s) and I have disclosed to the
      Registrant's auditors and the audit committee of the Registrant's board of
      directors (or persons performing the equivalent functions):





(a)  All
      significant
      deficiencies and material weaknesses in the design or operation of internal
      control over financial reporting which are reasonably likely to adversely affect
      the Registrant's ability to record, process, summarize, and report financial
      information; and





(b)  Any
      fraud, whether or
      not material, that involves management or other employees who have a significant
      role in the Registrant's internal control over financial reporting.











Date:  November
      13, 2007











/s/
      Nicholas D. Gerber


Nicholas
      D. Gerber


Chief
      Executive Officer