Lawmakers can revise the Immigration and Naturalization Act to include anti-Semitic activities as a new criterion for inadmissibility. A well-drafted measure would cover everyone convicted of persecuting, harassing, stalking, or criminally targeting individuals based on their actual or perceived Jewish identity, as well as anyone expressing views that call for the extermination of the Jewish people, opposing the existence of Israel, or supporting U.S.-designated terrorist organizations—including, but not limited to, Hamas and Hezbollah.

Ideally, these measures will lead to the removal and departure of the most dangerous anti-Semites from the United States. Even if the Supreme Court does not permit these restrictions to apply to immigrants inside the country, they will prevent future undesirable entrants through consular screenings.

Some may call these proposals a betrayal of freedom of expression, but there’s a good reason that the Constitution applies only inside the U.S.—and that immigration isn’t a right, but a privilege granted by law. America should be a haven for the virtuous and persecuted, not for the persecutors.