Its being built right now with federal money. There was a govt shutdown, which paused construction. But plans started back in 2017.
In February 2017, Trump said "the wall is getting designed right here" but did not offer specifics.[10] In March 2017, U.S. Customs and Border Protection (CBP) began accepting prototype ideas for a U.S.Mexico border wall from companies and said it would issue a request for proposals by March 24.
Again, physically building a wall is the last step in the process.
you didnt answer my question, so Ill try again.
If Trump has billions of dollars, then why dont he use that instead of taking money from our vets, and military?
Yo since when is a president supposed to use his personal funds for government projects? Especially those that are due to national emergency? Give it head an shake man ---