No, actually, we have explicit taxes for SS and Medicare, and we've known they were not bringing in enough revenue to fund those programs since the 80s.
The trust funds are almost dry, so we're either going to have to raise those taxes to fund those programs, or cut a critical safety net to the American public. I know where my vote is going.
Or cut something else. The assumption that all government money is spent perfectly on essentials is a huge issue that afflicts tens of millions of voters.