[Congressional Record Volume 157, Number 146 (Monday, October 3, 2011)]
[House]
[Page H6505]
From the Congressional Record Online through the Government Publishing Office [www.gpo.gov]

            By Mr. JOHNSON of Illinois:
        H.R. 3081.
        Congress has the power to enact this legislation pursuant 
     to the following:
       Article 1, Section 9, Clause 6
       No preference shall be given by any Regulation of Commerce 
     or Revenue to the Ports of one State over those of another