I would run with a focus on getting rid of the IRS and implimenting the Fair Tax.
Americans For Fair Taxation: FairTax.org
Iraq:
Do what ever has to be done to get out of there as quickly as possible without leaving it in shambles. Basically, I would let the generals handle the operational aspect, but I would make my stance that of not leaving untill they can run the show for themselves.
Illegal Immigration:
No amnesty. A compromise should be worked out where we can a) close our border off, and b) make sure we know who is in our country and where they are. Make a definative avenue for potential employees to come and work with the possibility for citizenship if they play by the rules long enough.
Social Security:
I haven't read up too much on the subject, but from what little I've heard I think that it would be best to give everyone their own private account, or the option to handle it themselves.
Public Education:
More competition. (school vouchers?)
Gun Control:
Keep it the same. Maybe up the punishment for crimes commited with guns.
Marijuanna:
Legalize it. Tax it. Treat it.
Environment:
Clean it up and keep it clean. I don't know if I agree with the federal government handing out money to fund alternative fuels, but I would like to see the government help out somehow.
Minimum wage:
Abolish the minimum wage. Let the employers and employees work it out for themselves.
Abortion:
Keep Roe v. Wade. I don't like the idea of abortion, but I don't see why I should come in and try to change anything. I would only focus on late term abortions and try to get both sides to compromise on a reasonable "window of opportunity" for abortions.
Gay Marriage:
Let the states decide. Maybe suggest to them to let gays have civil unions and all legal "perks" to being in a marriage. Let straights keep the word marriage. Sounds like a decent compromise to me.
Iran/ North Korea:
Keep a close eye on all of their weapons facilities. Get the UN to inspect them. If they are not allowed to inspect then we bomb their facilities. If they rebuild, we bomb again.
Africa:
I think we should seriously start talking with the UN or NATO and see if something can't be done to help those folks out. There is no reason there should be ethnic cleansing and/or land/ water feuds. They have got to stop killing each other. I'm still not sure about all of this, but it is a sad state of affairs over there. I would rather have the UN handle it more than us though, or be "in charge." I wouldn't want it to look like the US is trying to steal their shit or set up a colony, or whatever it is us evil Americans do.