Hey if liberals don't like this, because they consider it a police state, all they have to do is agree to build border walls were feasible and have manned positions covering were it isn't so that illegal immigration is ground to a halt. It's a simple equation, no illegal immigration equals no spot checks on buses and trains within the 100 mile border zone.
Of course what the liberals will demand is for the 1952 law to rescinded so as to make it easier for illegals, drug runners and terrorists to flow into America without fear of being caught.