California is advising health care providers not to write down patients’ immigration status on bills and medical records and telling them they don’t have to assist federal agents in arrests. Some Massachusetts hospitals and clinics are posting privacy rights in emergency and waiting rooms in Spanish and other languages.

The president’s Day 1 actions included directives that fly in the face of legal limits on involving the military in domestic operations and the constitutional guarantee of birthright citizenship.

The Laken Riley Act will now go to Trump's desk and symbolically will become the first measure he signs into law of his second administration.

U.S. President Donald Trump on Monday signed executive orders declaring illegal immigration at the U.S.-Mexico border a national emergency, designating criminal cartels as terrorist organizations, and targeting automatic citizenship for U.

There is a tension in U.S. public opinion about President Trump’s immigration plans.

WASHINGTON - Newly sworn-in U.S. President Donald Trump said on Monday that he would declare illegal immigration a national emergency, send troops to the U.S.-Mexico border, and reinstate his "remain in Mexico" policy as part of a sweeping immigration crackdown.

Trump invoked Article IV, Section 4 of the U.S. Constitution, which obligates the federal government to protect states against invasion, and Article II, asserting his authority to secure the border. The action also relies on provisions in the Immigration and Nationality Act.

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

Fox News contributor Nicole Parker and Chicago resident Cata Truss discuss President Donald Trump’s actions on border security and illegal immigration on ‘Fox News @ Night.’

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.

US border agents have been instructed to deport undocumented migrants crossing into the country. As Donald Trump declared illegal immigration a national emergency, concern is growing among some Senegalese about the fate of the thousands who have migrated illegally to the US.