Only $74bn short? That works out to $232/yr each, or an extra $20 per citizen per month.

That doesn't sound like all that much to spend to ensure Social Security stays available.

I think if you told people "we need to raise revenue through taxes 1.6% to ensure Social Security stays solvent for all working adults", most reasonable people would agree to that. At least, I would hope most people would think that's fairly reasonable.