[Congressional Record Volume 159, Number 20 (Friday, February 8, 2013)]
[House]
[Page H432]
From the Congressional Record Online through the Government Publishing Office [www.gpo.gov]

            By Mr. REED:
        H.R. 606.
        Congress has the power to enact this legislation pursuant 
     to the following:
       The constitutional authority on which this bill rests is 
     the power of Congress to establish Post Offices and post 
     roads, as enumerated in Article I, Section 8, Clause 7 of the 
     United States Constitution.