By all accounts, it looks like the US has scrapped plans to go back to the moon. This probably means a Mars mission is off the agenda as well. Maybe the Chinese will pick up the slack and keep us on track as a spacefaring species. Maybe demand for Helium Three will inspire commercial space travel and exploration. I doubt it. What private entity would be that future oriented?
If the Chinese start going to space, the US will probably see this as a national security problem and get back in the space game. If space is going to be militarized, the US doesn't want to be on the earthside looking up. Maybe militarization would get space exploration jump started as each state competed to stake out extraterrestrial real estate.