How to strategize the wall:
Use savings in bringing troops home to fund the wall, unless Congress with sSenate approves the 5 billion. If they don’t approve the 5B use the military budget, and don’t sign any bill until the wall is done. This will keep the courts at Bay, and have the courts by their balls, otherwise they too will be blamed for perpetuating the shutdown and Roberts would not want to be seen that way.
Otherwise if trum, starts the wall and then signs a bill with no wall money the courts will step in and injunct it’s completion. Trump, if no bill with funding then please sign no bill until the wall is completely completed.