If one accepts that rationale, then the Bush Tax Holiday is ending. There isn't anything "going up." I don't think that logic will find a lot of acceptance in these parts.
The FICA holiday isn't a tax cut. It's people not paying into the federal insurance programs from which they're expecting a payout at a later date. Before you tell me that it a) isn't insurance and b) is never going to be paid, stop wasting both of our time. The federal government DEFINES it as a federal insurance program. That's what the letters in FICA stand for. The fact that it's eventually going to be broke is immaterial to the fact that it's one way that the 47% are forced to contribute to America. You aren't going to get the 47% to put up money to fund the country any other way.