His primary job as president is the safety and security of the American people.
And he is over the Defense Department in his administration.
Sounds like a an easy fix to me. Just draw up a little EO to make it legal and bingo, the deed is done.
But then I'm just sitting here typing on my computer and he's the President of the United States, so what do I know.
Like your tag-line. Reason Trump is trying to get funding through the normal channels of congressional appropriations is so that the MSM won’t attack him 24-7 as a radical dictator. And Trump is running for re-election. Watch out if he wins re-election. The wall will get built in his 2nd term. Count on it.