He knows that he’s not going to be reelected if he doesn’t.
President Trump said he believes there’s a good chance he’ll have to declare a national emergency at the border.
While speaking at the White House Friday, the president said the wall will be built one way or another. He also discussed the current construction already taking place.
https://www.oann.com/president-trump-good-chance-ill-declare-national-emergency-at-border/