Koolau
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
I added the numbers
1) AFAIK, the increase in wives in SS covered jobs has helped SS finances. First, when they were entering the workforce they added to the paygo revenue and are partially responsible for the program running the surplus that it did. In the long run, they reduce the cost of spousal benefits, improving the tax/benefit ratio, so they help there, too.
2) I mentioned birth rates as a big deal. In the simplest terms, the WWII generation had 3 children per couple, the boomers had 2. If nothing else changed, either the boomers would have to settle for 2/3 the benefits that their parents got, or the boomers' kids will have to pay 3/2 = 150% of the taxes their parents paid. (Note that this impacts all retirement programs, not just SS.)
3) I've never looked at that. It seems that if legal immigrants come as young workers they impact the system just like births - more people paying taxes today and more receiving benefits in the future. If they come late in their working careers they may get a slightly better deal than workers who were here for a lifetime due to the skewed benefit formula.
Many illegal immigrants pay SS taxes but can't legally get benefits. So they are a net plus. The SS actuaries have gone back and forth in their projections. In some years they have assumed that illegal workers would eventually get some sort of amnesty and hence would get benefits. In other years, they've assumed no future benefits. I'd guess the current projections use the second assumption, but I haven't checked.
4) I'll agree with that.
Apologize if I'm confusing the source, but I think Burns and Kotlikoff discussed (documented) in GREAT detail the issues with SS (esp. effects of birth rates, women in the workplace and effects of migration) in "The Coming Generational Storm". IIRC, they DO point out that women in the workforce has been somewhat of a good thing to SS (as has immigration). However, they make a better case for the system as it stands being unsustainable, immigration or not.
But the good news for SS is that it is in dramatically better shape than Medicare!! Forget the numbers exactly, but I'm thinking they indicate a total deficit of something like 10 Tril. for SS and 60 Tril. for Medicare in the next (50 or 75 years - forget the details).
Anyway, I point all this out as a possible reference point for further discussion - if anyone wants to use (estimates of) facts and figures, all in one neat chapter of a book. Probably not.