Get realistic people... defense, national security, and the like are actually charged of the government within our constitution... in no way should defense of our citizenry, our land, and our allies be cut....
Cut the IRS. Simplify the tax code to a basic flat tax. Equality of taxation on simple percentage with an adjusted zero line. Eliminate all but the necessary deductions (home interest and children). The simplified tax code keeps taxes coming in and eliminates the need for a huge IRS department, saving a TON of money.
Cut entitlements to the bare minimum. And by bare minimum I mean only helping those who are completely incapable of helping themselves. Corporate welfare goes bye-bye too. The government is not mommy nor is it an insurance company. No more free rides. Bring back personal responsibility.
Eliminate all earmarks on bills. These account for a ton of expenditures. If every bill is forced to stand alone, less will be brought up and more likely only the more important ones will surface.
Eliminate extravagance within politics. No more multi-million dollar parties etc. Politicians want a party, they can pay for it out of pocket.
And on the other side of it... I would create a national lottery where ALL profit goes directly to debt. Think of it as a voluntary tax for debt repayment. And someone is gonna get rich, making it a good story all around.