Contrary to the popular view, i think Trump is very serious about his wall and given the opportunity will carry it out.
For those that are not aware, Trump has created a new branch of the armed services called "Space Force" So that the USA has domination in space .... and for those that think it's a joke ... think again
"It is not enough to merely have an American presence in space. We must have American dominance in space," Mr Trump said at the White House.
https://www.bbc.co.uk/news/world-us-canada-44527672