48% of the people in this country are partisan fools? Or maybe 48% of the people realize that the nation can’t even fight a war in Iraq without it becoming a national crisis, so how are we going to fight a much more difficult war in Iran?
Much more difficult? Few things can be more difficult than a 4+ year nation-building exerise in a Muslim country filled to the brim with suicide-bombing terrorists (Iraq), and conducting air strikes against a few dozen sites in Iran certainly is not of them. The entire operation will be over long before you and your buds on the other side of the aisle can screech "quagmire."
Prepare yourself for the inevitable -- The U.S. isn't going to allow a hostile Muslim nation to manufacture nukes and initiate a nuke arms race throughout the entire region. A Middle East filled with Muslim nations armed to the teeth with nukes is not an option.
You say such a strike would only set the Iranians back a few years in their nuclear quest? Even if true, a few years can make all the difference in this crisis. They could easily have their long-awaited revolution by then and by governed by sane people who have no interest in starting a nuke arms race with their neighbors.