President Donald Trump signed more executive orders aimed at shutting down the southern border, but the details on how migrants would be blocked from crossing remain unclear.

An estimated 11.7 million people are living in the U.S. illegally, and ICE currently has the budget to detain only about 41,000.

The Trump administration has not publicly said how many immigration detention beds it needs to achieve its goals, or what the cost will be.

As California braces for Trump's mass deportation plans, advocacy groups are mobilizing to defend immigrants with legal support.

Trump campaigned largely on the issue of immigration, promising to carry out mass deportations of roughly 11 million illegal immigrants currently in the U.S.

The arrests by Immigration and Customs Enforcement officials occurred during a 33-hour period from Tuesday to Wednesday.

U.S. President Donald Trump's administration has directed prosecutors to investigate officials who resist immigration enforcement efforts, intensifying a sweeping crackdown that Trump launched the day he took office.

ABC News’ Mireya Villarreal visited a school in south Texas to meet students and faculty preparing for the potential impacts of Donald Trump's immigration policies.

Phoenix Union High School District (PXU) was the first Valley school district ABC15 had seen sending out a letter to parents regarding the measure.

The Trump administration has ordered 1,500 U.S. military troops to the southern border as part of a crackdown on undocumented migrants.

Federal immigration authorities will be permitted to target schools and churches after President Donald Trump revoked a directive barring arrests in “sensitive” areas.