If the DiFascio of NYC or B.O.Bama or Hollyweird think this will keep them safe from Syrian jihadists, they haven’t been paying attention to the migratory behavior of those Islamists who carried out the Paris attacks.
There are no border check points to keep them from going state to state.
Even the 9-11 hijackers had ties to Florida and other states before heading to Boston and eventually New York.
The 9 11 savages only needed the east coast.