Mahmoud Khalil is a leading agitator in New York who stokes hatred and harassment of Jews, works for the eradication of Israel, glorifies the murderous evil of Hamas terrorism, and presses for the “total elimination of Western civilization.” So he is among the most repellent of men in a country of 335 million people, which is some achievement.

If he were an American, his fellow Americans would simply have to put up with his continued presence in the country. But he isn’t. He is a foreigner. He is here only because he has been generously granted a green card.