A look at Trump's immigrations plans by the numbers

More than 521,000 cases are pending in federal immigration court, according to the Transactional Records Access Clearinghouse at Syracuse University.

Immigrants with pending deportation orders: 88,128 as of 2015, according to the Executive Office for Immigration Review at the Justice Department.

Border Patrol agents: 18,321 agents patrol the U.S. border with Mexico.

Arrests at the border: 408,870 people were arrested trying to cross the border illegally during the 2016 budget year that ended in September.