President Donald Trump has quickly mobilized wide swaths of the federal government to arrest and detain undocumented immigrants in the United States, part of a broader strategy to amass a large enforcement machine.

Specifics of detainments have been scarce, leaving it unclear whether the criminals being targeted make up a significant share of those being captured.

Immigration and Customs Enforcement has space to detain about 41,000 people a day, but Trump’s "border czar," Tom Homan, wants space to hold over double that amount.