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.

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.

“Today, I will sign a series of historic executive orders. With these actions, we will begin the complete restoration of America, and the revolution of common sense,” said Trump, who at midday Monday became only the second U.S. president to serve nonconsecutive terms, after Grover Cleveland in the late 1800s.

The orders include declaring a national emergency to deploy military personnel to the border, suspending refugee resettlement and ending birthright citizenship.

President Donald Trump signed a flurry of executive orders aimed at immigration on his first day in office. Here's what we know about them.

In just the first couple days of his second term, President Donald Trump has already taken an extraordinary amount of executive action. On Monday alone, he issued 26 executive orders, 12 legally binding memoranda and four presidential proclamations.

Within hours of his Inauguration, President Donald Trump set out to fulfill a number of his campaign promises, issuing a spate of presidential actions on everything from the border to federal building architecture.