In Feb 2019, Trump declared an illegal national emergency and ordered that money allocated by Congress for Pentagon military construction projects be used instead for the wall. Our Constitution gives budgetary responsibility to Congress ONLY! The only statistic you need to know to verify this is not an emergency is that immigration arrests are down 80% since 2000. 

Update: On Friday, Oct 10, 2019, a Federal judge ruled the President of the United States broke Federal law.

In Trumplandia:

Who’s going to build the wall? Mexico.

Who’s going to pay for the wall? Mexico.

In reality:

Who’s going to build the wall? We are!

Who’s going to pay for the wall? The military!