Pretty much silly declaration. There is a lot of unknowns starting from sustaining life and keep sane the astronauts during the journey to Mars.
But I agree the whole budget thing is just even more silly than the rest. Who would spend taxpayers' billion dollars to save Matt Damon (again)? Be realistic, we let people die here on Earth for much less than that. Let him die once and for all. The astronaut is of no value once the mission is over.
If it has syntax, it isn't user friendly.