The American Dream has come crashing down for millions and millions of people who line up to get a chance to settle in the United States. Donald Trump has, with one signature, shut the door for them permanently.

"The first 100 days are going to be the most aggressive, change oriented policy proposals and procedures that we've ever seen," KOAT political expert Brian Sanderoff said.

The Trump administration has ended use of the border app called CBP One that allowed nearly 1 million people to legally enter the United States

Hours after Trump’s inauguration, his administration canceled appointments allowing migrants to enter the U.S. to request asylum, leaving many of them stranded on the U.S.-Mexico border.

Immigrants rights groups are already contesting President Trump's sweeping executive orders aimed at combating illegal immigration.