The top official in charge of carrying out President Donald Trump’s mass deportations agenda has been reassigned amid concerns that the deportation effort isn’t moving quickly enough.

The Trump administration has already pushed aside its acting director of U.S. Immigration and Customs Enforcement, Caleb Vitello, after just weeks on the job due to higher-ups’ concerns that arrests and deportations have not occurred fast enough,

President Donald Trump’s administration will replace the acting director of Immigration and Customs Enforcement, according to multiple reports—as the Trump administration reportedly presses the agency to ramp up arrests of undocumented migrants.