More evidence that raising the Social Security retirement age is no problem for the rich, but tough on the poor

Washington wonks love to portray raising the retirement age for Social Security as a painless "fix" for the program's finances.

After all, the thinking goes, the near-retired can be exempted from the increase, and since Americans on average are staying healthier into their later years, working longer and living longer in retirement, holding off retirement benefits is not only fair, but from a fiscal standpoint essential.

But a new study punctures this argument with stark data showing that within the average there are winners and losers - mostly distinguished by household