President Donald Trump on Wednesday moved to ban the entry of citizens of 12 countries into the U.S.
GREGORY BULL/THE ASSOCIATED PRESS
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“Close the borders! Don’t let any of them in!” You’re meant to picture the leader shouting this into an old-style telephone in a smoke-filled room, then a cut to scenes of tollgates being lowered, armed sentries standing in watchtowers, rolls of razor wire being stretched across streets and airplanes turning back.
In reality, border closings and travel bans generally have the opposite of their intended effect, causing mass rushes to beat the ban and sharp increases in illegal migration.
