Drug overdose deaths plummeted over 20% as border enforcement tightened, new CDC data shows. Experts suggest stronger policies may curb fentanyl flow.

Tents are still set up inside the Juventud 2000 shelter in Tijuana, ready to provide migrants with a place to stay. But on a recent Wednesday, the once-busy refuge was quiet. Unlike this time last year,

Among his first actions back in office, Trump declared a national emergency at the border, which will free up military funding to build more sections of a border wall, support operations to stop border crossings, and send troops to the southern border to, as he said in his Inaugural Address, “repel the disastrous invasion of our country.”

From border wall construction to mass deportations, here's a look at the president's campaign promises and their implementation.