You are so wildly unrealistic I don't even know where to start.

(By the way, the US had no plans to rescue the lunar astronauts if anything went wrong, and they had speeches for the President ready if that happened.)

It would cost quadrillions of dollars and a century to set up a colony on Mars. For a tiny fraction of that, we could save the only biosphere we know of - the Earth. And no, we don't have the money to do both - in fact, we are going to do neither.