By stopping the flow of money to those without legitimate need (did you know that 60% of our budget is entitlement driven and thus "mandatory" spending?) and by getting Uncle Sugar out of things he doesn't belong in (health care, education, etc...). If we'd spend our money more wisely at home we'd have enough to help other nations when they needed it.
Great plan, we get the domestic leeches off the payroll so that we have money to pay foreign leeches. Like we owe them.
You say that Uncle Sugar doesn't belong in education etc. It is OK for Uncle Sugar to take money from the citizens and send it overseas?
http://www.youtube.com/watch?v=_ocVj6UWiDI