The US Government should get the f*** out of it. And stay out of it.
Instead, private companies should take the lead. That way, we would not be held back by that out of date shuttle that belongs in the late 1970s, and be held in low earth orbit. Not to mention all the procedural errors that start with a small group in Houston--a company that is competently running a space program is going to allow people the latitude to correct mistakes made at ground control, and want to advance instead of retarding space travel.
If Nimrod, for instance, were running the space program in 1963, we would have landed on the moon (and no possible fake landing, either--the real thing) by 1964, and landed on Mars before 1969. And we would be colonizing the whole solar system, and heading for others, as I am writing this. He would have developed oscillating gravity internet as a practical system to communicate at those long distances instantaneously instead of in hours or days, and it would have allowed infinite bandwidth today. But, we have our escargot government running--and dragging--it.