AARP has come out in opposition to any extension of the partial F.I.C.A. tax holiday. The F.I.C.A. tax supports the Social Security trust funds. The partial F.I.C.A. tax holiday of the last two years is set to expire at the end of the year unless continued. General revenues have been used to make up for the lost F.I.C.A. tax revenues over the last two years.