Donald Trump’s immigration proposals, if you can call them that, are short on details but long on controversy. The presidential candidate kicked off his campaign by labeling immigrants from Mexico as criminals who should be removed in a mass deportation campaign akin to the now-discredited “Operation Wetback” — the U.S. government’s official name for the campaign — in 1954.

Once again stirring the pot, Trump recently called for a blanket prohibition on all Muslim noncitizens from entering the United States. That would include temporary visitors, such as university students, as well as noncitizens seeking to become lawful permanent residents as spouses of U.S. citizens.