WASHINGTON (AP) — President Donald Trump says he wants to use the military to secure the U.S.-Mexico border until his promised wall is built.

Trump says during a lunch with Baltic leaders that he’s spoken with Defense Secretary Jim Mattis about the idea.

READ MORE: Two Men Under Arrest For Allegedly Starting Caldor Fire

He says, “We’re going to be doing things militarily until we can have a wall and proper security.”

He’s calling it a “big step.”

READ MORE: Rain, Snow, Freezing Temperatures On Deck For Northern California

Trump begrudgingly signed a spending bill last month that provided far less money for the wall than he wanted.

He’s been complaining that U.S. borders are too porous and its immigration laws are too weak.

MORE NEWS: No Credible Information Found On Anonymous Threat To Kennedy High; Extra Police On Campus

Copyright 2018 The Associated Press.