Federal authorities arrested Mahmoud Khalil, one of the leaders of the pro-Hamas coalition at Columbia University, last weekend on the charge that he “led activities aligned to Hamas, a designated terrorist organization,” and posed a threat to national security and foreign policy.

Since that time, politicians and pundits, particularly on the left, have tried to lionize this anti-West terror-supporting radical as some kind of liberal icon and have questioned whether the government has the right to deport someone of his ilk. For the record, of course it does.

The Immigration and Nationality Act (INA) codified at 8 U.S. Code § 1182 applies to all aliens, meaning “any person not a citizen or national of the United States.” This term includes both visa holders and green card holders like Khalil. 

The INA contains a number of activities for which a person can be deemed ineligible based on security and related grounds. The relevant subsection contains nine grounds related to terrorism, the majority of which are not controversial at all: members of terrorist organizations, people engaging in terrorism, etc.