The national emergency declaration will allow the Trump administration to deploy armed forces and National Guard members to the border. Trump said troops will "repel the disastrous invasion of our country." It's unclear how many troops will be sent to the border.

President-elect Donald Trump is set to declare a national energy emergency on Day 1 of his return to power, part of his administration's plan to ramp up domestic energy production. The order will focus on unlocking Alaska's resources as well as ending what a Trump White House official called "the electric vehicle mandate."

By declaring a national emergency on energy, Trump will make it a priority of his administration to increase the domestic production of oil and other forms of fossil-fuel energy, officials said. It comes as U.S. crude oil production has already hit an all-time high over the past year.