They're wall building laborers. That would be funny.
If it's the situation you describe, then you are correct that it is not funny.
But, if it's actually as dire of a situation as you describe (with the caravan, specifically) then I don't see why President Trump would say "we're gonna make a lot of people happy." when talking about the caravan at a rally.
I guess we'll see. I do appreciate the Military and I understand that people have died for our country and that's the reason I am free.