The clashes that longtime immigration advocate Martha Arevalo had with the Los Angeles County Sheriff's Department under Jim McDonnell were years ago — but still fresh in her mind after this week's election.

Trump has said he would move thousands of troops currently stationed overseas to the southern border of the U.S. He has also said he would deploy the U.S. Navy to impose a blockade of fentanyl and fentanyl precursor chemicals from entering the country.

President-elect Donald Trump has an array of policy initiatives on immigration he could execute on his first day back in the White House, although the full implementation of his campaign promises would have to come later in the administration and may be constrained under the law.