Fascism starts at the borders/ports of entry for a couple of reasons. First, these measures aren't meant to protect you, they are meant to keep you from leaving

Fascism starts at the borders/ports of entry for a couple of reasons. First, these measures aren't meant to protect you, they are meant to keep you from leaving. See no fly lists, the Soviet Union, Berlin Wall vs Trump's wall. Second, it's an experiment to test practices that are later implemented on American soil against every citizen. The public is acclimated slowly over time to the point that they will be completely apathetic once the same policies are officially dictated at a national level.