In fact, the U.S. Constitution specifically gives the Federal government the authority to "regulate interstate commerce," and to build and maintain "post roads," ports and harbors -- and that's about all. Anything above and beyond that -- including the construction of a "free" system of highways -- was never part of the deal.
The Right to TravelAs the Supreme Court notes in Saenz v Roe, 98-97 (1999), the Constitution does not contain the word "travel" in any context, let alone an explicit right to travel (except for members of Congress, who are guaranteed the right to travel to and from Congress). The presumed right to travel, however, is firmly established in U.S. law and precedent. In U.S. v Guest, 383 U.S. 745 (1966), the Court noted, "It is a right that has been firmly established and repeatedly recognized." In fact, in Shapiro v Thompson, 394 U.S. 618 (1969), Justice Stewart noted in a concurring opinion that "it is a right broadly assertable against private interference as well as governmental action. Like the right of association, ... it is a virtually unconditional personal right, guaranteed by the Constitution to us all." It is interesting to note that the Articles of Confederation had an explicit right to travel; it is now thought that the right is so fundamental that the Framers may have thought it unnecessary to include it in the Constitution or the Bill of Rights. Thanks to Marko Liias for the idea. Thanks to W.H. van Atteveldt for the note about Congressional travel.
Okay, let's take away your freedom to travel, since you've disparaged mine, and discuss this again later when you've been cooped up in your house for about 100 days and unable to leave home.
Smartypants. See how you like it when the shoe's on the other foot. Pinches, huh?
Oh, and the cite is the Ninth Amendment, which specifies that freedom is the default condition in all things not invaded by the legislature's lawmaking power. That's the concept that Bob Bork got hosed on, when he was up for confirmation as an Associate Justice.
It is impossible for people to "assemble" without traveling to the point of assembly. The freedom of the people to assemble is explicitly guaranteed in the First Amendment. Q.E.D.
You lost that argument when they build what is now US 40.