CHICAGO (AP) — Federal immigration agents will stop making mass worksite arrest of immigrants employees suspected of living in the U.S. without legal permission.

Homeland Security Secretary Alejandro Mayorkas issued guidance Tuesday saying the agency would cease such targeted enforcement which has “not focused on the most pernicious aspect of our country’s unauthorized employment challenge: exploitative employers.”

Instead, Mayorkas wants immigration agencies to focus on going after employers who hire workers without proper authorization by increasing penalties and coordinating with other agencies, including the Department of Labor.

Mass raids were common under former President Donald Trump, including a 2019 operation targeting seven Mississippi chicken processing plants.