I would like to instead guess what they are going to do. It will be some combination of a special tax on the wealthy and simply printing more money to cover the bill.
That would lead to class warfare, and inflation. But it would also kick the can down the road another decade or two. And that’s always the safest play for politicians.
That's the path of least resistance and hence the likely route. While I think others are exactly right about kicking illegals off SS and doing extreme auditing of those (fraudulently) on SSDI, kicking the can down the road actually may not be a bad idea as a lot of Baby Boomers are going to be gone in another decade or so anyway, so the program may self correct.