Everything is a nail.
Of course, there is other stuff in the tool kit besides a hammer. There’re pliers and wrenches and Allen keys and screwdrivers and splining tools and all sorts of neat things.
But Republicans don’t believe in them. Therefore those implements do not exist.
Harold Meyerson on the Republican Party’s belief that cutting taxes for the rich is The One True Faith (emphasis added):
So George W. Bush called for tax cuts to deal with the dangerous budget surpluses that Bill Clinton had been running, and then called for tax cuts to close the deficit his earlier tax cuts had created. He proposed tax cuts to finance his war in Iraq. And in that same spirit, defeated presidential nominee John McCain, in his Republican alternative to the Democrats’ stimulus bill, called for nothing but tax cuts to remedy the current meltdown and complained that the Democrats were calling for spending, not stimulus. Never mind that no reputable economist believes that tax cuts get money into circulation as effectively as government spending does. The Republicans’ belief in tax cuts is beyond the realm of empirical argument. Data do not daunt them, nor facts compel reflection.