[Congressional Record Volume 159, Number 2 (Friday, January 4, 2013)]
[House]
[Page H54]
From the Congressional Record Online through the Government Publishing Office [www.gpo.gov]

            By Mr. GRIMM:
        H.R. 181.
        Congress has the power to enact this legislation pursuant 
     to the following:
       Article I, Section 8, Clause 7
       The Congress shall have Power * * * To establish Post 
     Offices and post roads.