The income part of SS is more or less subsistence level, which arguably was its intention to keep the elderly from begging in the streets. But in the dystopian US healthcare system, Medicare is arguably the more important part of the social net. Without it, you are not going to afford any healthcare in old age.

If this budget hits the PAYGO limits, which is basically guaranteed, that will trigger automatic cuts to Medicare, so they can backdoor cut the program without anybody voting for that.