Who’s going to enforce it? The FBI going to sit at checkpoints at every state border crossing?
Consider the Woodrow Wilson Bridge right there to the south of DC, between MD and VA. 75,000 cars per day. Rush hour on it is legendary.
Or how about the 113,000 vehicles a day in the Lincoln Tunnel between NJ and NY?
Or going the other way, how about the gravel road between WY and MT at 44.994359, -106.433157 ??? It appears the nearest "town" is Leiter, WY some 26 miles away. Leiter itself appears to be a post office and half a dozen trailer homes or so. Great posting for agents to man the crossing 24x7.
Of course they wouldn't really try to implement it. They would only use it to go after people and places they deemed "troublesome." In other words you could bet illegals and anyone wearing a BLM/antifa shirt would be let through the roving/random checkpoints with nary a glance. Anyone without the proper papers or "look" is going to get strip searched. Anyone in a MAGA hat is going to get body cavity searched.
Just another law to be selectively applied to people not enthusiastically supporting their agenda. You know, like Clinton getting away with mis-handling classified material. bammy getting away with fast & furious. Someone getting away with obviously offing Epstein. The leftists ignoring their own mask mandates. Is it becoming clear yet people? They are creating two very distinct classes of people here. The laws only seem to apply to one of them.