As U.S. President Donald Trump pledges to deport “millions and millions” of “criminal aliens,” thousands of federal law enforcement officials from multiple agencies are being enlisted to take on new work as immigration enforcers, pulling crime-fighting resources away on other areas − from drug trafficking and terrorism to sexual abuse and fraud.

The Trump administration’s attempt this month to deport a Columbia University graduate and pro-Palestinian campus activist due to his alleged “activities aligned to Hamas” was the first case of its kind to grab headlines.

The move comes as the Trump administration ramps up its deportation campaign, in some cases removing people with little to no due process.