Trump should issue an Executive Order ending all new entry of asylum-seekers for the simple legitimate reason that there is 7 year back-log and no detention space. You can't serve meals when there's no more food to serve. If there is a lawsuit, say "fine", take it to the US Supreme Court if you want, we'll win. Supreme Court can't allocate or appropriate funds for detention space and Supreme Court can't allow entry of a foreign national. Slam Dunk.

Just stop all response to any new asylum claim due to lack of resources and deny entry at the border, like Trump said "we're closed."