When you're holding a hammer, everything looks like a nail. And when you're in Washington, every "crisis" is looks like a great opportunity to expand government.
Repubs are no exception to this rule. A dwindling few of them want to rein in government, but in general, Republicans go to Washington and become intoxicated with the head trip that comes from doing Big Important Expensive Things.
So a bit like Brer Rabbit (to mix metaphors), congressional Republicans will throw fits about raising taxes. But in the end, they'll get the big government and big taxes they love so much.