On Monday, the Department of Homeland Security announced that it had also revoked the work visa of Brown University professor Rasha Alawieh and denied her reentry into the U.S. after she attended the funeral of Hezbollah leader Hassan Nasrallah in Lebanon.

Tren de Aragua, a gang born out of a Venezuelan prison, is a loose network that doesn’t operate like groups typically considered terrorist organizations.

On his first day in office, Trump took steps to designate the Tren de Aragua gang a “foreign terrorist organization” alongside several Mexican drug cartels.