Others, however, are urging caution, telling the president that a legal challenge to his actions would be almost assured, putting Trump on course for a bare-knuckled fight with House Democrats and a grueling series of court challenges.
Stephen Miller, the outspoken immigration hawk and senior Trump adviser, is taking a leading role writing Trump’s remarks.
Democrats have already suggested declaring a national emergency to build the wall would be unconstitutional, arguing that Trump has no proof that an emergency actually exists and no authority to move around already-appropriated federal funds without congressional approval. Pelosi and Schumer will follow Trump’s address with their own rebuttal and will be sure to hit that point.