Social Security is trying to worm its way out of the federal courts applying the new rule changing past relevant work from 15 years to 5 by saying in a footnote to a Social Security ruling that it expected the courts to apply the law in effect at the time of the administrative decision.
I wrote earlier that I didn't think that Social Security was getting out of this problem with a simple footnote.
Here's a quote that may be of interest:
It is in the general true that the province of an appellate court is only to enquire whether a judgment
when rendered was erroneous or not. But if subsequent to the judgment
and before the decision of the appellate court, a law intervenes and
positively changes the rule which governs, the law must be obeyed, or
its obligation denied. If the law be constitutional . . . I know of no
court which can contest its obligation. It is true that in mere private
cases between individuals, a court will and ought to struggle hard
against a construction which will, by a retrospective operation, affect
the rights of parties, but in great national concerns . . . the court
must decide according to existing laws, and if it be necessary to set
aside a judgment, rightful when rendered, but which cannot be affirmed
but in violation of law, the judgment must be set aside.
Chief Justice John Marshall wrote that in United States v. Schooner Peggy, 5 U.S. 1 (1801). You don't have to go back that far to find the same principle applied. Try Bradley v. Richmond School Board, 416 U.S. 696 (1974). Want a case where this was applied to Social Security? See Hicks v. Califano, 600 F.2d 1048 (4th Cir. 1979). That one is especially applicable because it was a case arising from the initial adoption of the grid regulations.
There won't be that many cases where the difference between 15 years and 5 years is outcome determinative, I don't know why Social Security wants to fight over these few cases. Get it over with and accept the voluntary remands.
For that matter, apply this at the Appeals Council. Don't apply res judicata to cases affected and grant reopenings within the two and four time periods allowed by law when requested.