Well for starters he could have ordered the seabees to construct the wall. It might be helpful if he would stop telegraphing his actions and just do it.
I said it would require a tyrant like he replaced to undo what the previous tyrant did. We will never do what it takes but they will, when they take control off all three.
The damned lefty judges won't even allow hi to do what he's LEGALLY allowed to do, let alone "act like a tyrant"; so you're just blowing hot air, whilst daydreaming out loud.