In this Tuesday, Feb. 7, 2017, photo released by U.S. Immigration and Customs Enforcement, foreign nationals are arrested during a targeted enforcement operation conducted by U.S. Immigration and Customs Enforcement aimed at immigration fugitives, re-entrants and at-large criminal aliens in Los Angeles. Advocacy groups said that Immigration and Customs Enforcement officers are rounding up people in large numbers around the country, with roundups in Southern California being especially heavy-handed, as part of stepped-up enforcement under President Donald Trump.