Gun Control - As Reb stated, see 2nd Amendment. "The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants." - Thomas Jefferson
Gay Marriage / Abortion - should be left to the states to decide
Church and State - separate meaning no recognition or establishment of state church. This does not foreclose cultural celebrations based on religious observance recognized by the government - Christmas, Hanukkah, etc.
Taxes - the lower the better. Reduce spending, don't increase taxes.
Foreign policy - we should do as George Washington advised us and limit our meddling in foreign affairs. However, when attacked we must respond, when provoked we must defend ourselves and our allies.
Education - get the federal government out of it. Period.
Trade - Free trade.
Welfare - must be turned into workfare. If not, it must be ended except for the absolute destitute among us.
Campaign finance - political speech must be protected. Full disclosure is fine but no restrictions.
Death penalty - support it.
Social Security - privatize it or phase it out. The system is broken and increasing s.s. withholdings and increasing the retirement age won't fix it.
Energy - I believe in exploiting the resources we have here. That means ending the restrictions on drilling off the coast of Alaska, the Pacific coast, and the Atlantic. We must reduce regulations relating to the building of refineries and we must certainly expand production of nuclear power and other alternatives.
Environment - protect it, but not at the expense of progress. Human lives are more important than trees and animals.
Unfunded state mandates - unconstitutional.
Civil Liberties - legislation like the Patriot Act and Fairness Doctrine are, I believe, facially unconstitutional. The central government has very limited powers as enumerated in the Constitution. We must return the federal government to only exercising those powers, the remainder belong to the states and to the people.