Social Security: Raise retirement age to 68, means-test social security benefits so that the wealthy aren't receiving money they don't need.
Medicare/Medicaid: block grant the programs to allow the states to take care of their elderly and their poor the way they see best.
Trade: Pursue more free trade agreements, no tariffs/quotas or other impediments to trade
Taxes/spending/budget: lower corporate tax rate to 25%, lower the rates for the middle to lower class brackets, offset revenue losses by spending cuts, support a balanced-budget amendment
I agree with all of this except the balanced-budget amendment, and I'd favor some renegotiation of trade deals to make them more favorable toward the US when possible.