The Trump administration’s detention of a green-card holder who was a leader in the Columbia University protests against Israel has put a face on the debate over immigration and the limits of free speech, with a sympathetic twist: The man, Mahmoud Khalil, is married to an American, and they are expecting their first child next month.

Last Saturday, immigration agents arrested Mahmoud Khalil, a lawful permanent resident of the U.S., at his home in New York City, declaring that he would be deported as soon as possible. The Trump administration did not charge Khalil with a crime,

The Trump administration has not been subtle about its intentions. A White House official, speaking anonymously to the Free Press, told the right-leaning media organization that Khalil’s arrest would be a “blueprint” for other actions.