Trump had vowed to launch mass deportation roundups over the weekend, causing immigrants and their advocates to brace for mass arrests, but by Sunday evening there were only reports of low-profile operations in a few cities.

"The ICE (Immigration and Customs Enforcement) raids were very successful," Trump told reporters at a White House event. "Many, many were taken out on Sunday - you just didn't know about it. ... It was a very successful day but you didn't see a lot of it."