Donald Trump is leaning on agencies besides Immigration and Customs Enforcement to help execute his promise of carrying out mass deportations.

GOP senators reintroduce a bill to allow legal action against sanctuary cities for crimes by undocumented immigrants.

The program that resulted—"Mexico Embraces You"—aims to shelter deported Mexicans, some 5 million of whom are estimated to be living in the United States illegally and thus at risk of being sent back.