Immigration experts say the most recent proposals would raise constitutional challenges in the U.S. and Mexico, as federal courts have repeatedly ruled that immigration law enforcement falls under federal jurisdiction.
Immigration experts say the most recent proposals would raise constitutional challenges in the U.S. and Mexico, as federal courts have repeatedly ruled that immigration law enforcement falls under federal jurisdiction.
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In Washington, the immigration debate means the U.S. border and President Biden's policies. But Mexico and the entire migration route are under strain.