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.

President Trump's administration officials are pushing back against a federal judge who intervened in the efforts to deport migrants under the Alien and Sedition Act of 1798. CBS News' Ed O'Keefe reports as details emerge about the potential use of Internal Revenue Service records in immigration probes.

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