A lot of the problems originate in Congress, caused by both parties, and could be solved by them if they weren't so corrupt and power hungry.
For starters, I think we need Congressional term limits(2 term max).
Stop shitting all over the Constitution and our civil liberties with things like the Patriot Act, NDAA, warrantless wiretapping, domestic spying, domestic drones, etc.
Show some fiscal responsibility and balance the budget. Borrowing and spending is out of control.
Shrink the federal government. There are so many agencies and departments within the gov't that could be merged with others, or flat out cut. Take a look for yourself. http://www.usa.gov/Agencies.shtml