[Congressional Record Volume 158, Number 16 (Wednesday, February 1, 2012)]
[House]
[Page H375]
From the Congressional Record Online through the Government Publishing Office [www.gpo.gov]

           By Mr. GRIFFIN of Arkansas:
       H.R. 3870.
       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.