NPR had an article about how really rather useless NASA is. That most of Apollo and other spacecraft as well as the space station, were comprised of independent efforts brought together by NASA.
The article also said the Space Shuttle was originally supposed to fly people to already-created space stations. It was really just an intergalactic bus, but was turned into a parts hauler for the space station.
So in answer about Apollo today, sure, it could be done; but by _______________, which is a private company.
As is, I think Obama might seek a moratorium on further space exploration. That surely gives us something
less to look forward to.
As to relying on NASA to do it, don't bet on that during our lifetime.