More than a dozen migrants took sanctuary inside Philadelphia churches during President Donald Trump’s first administration, the most of any city in the country, blocking their deportations by putting themselves beyond the reach of ICE agents.

The Department of Homeland Security gave the green light for law enforcement to make arrests at sensitive locations like schools or churches, which were off limits under previous administrations. Bridgeport Public Schools was the first district in the state to take preemptive action if ICE shows up at their schools.