After the Supreme Court held in Lucia v. SEC that Administrative Law Judges (ALJs) as then appointed were unconstitutional, there was the inevitable issue of which Social Security claimants would get new hearings. The Social Security Administration argued that the issue had to have been raised before the Administrative Law Judge or at least before the Appeals Council. They have now given up on the argument that Lucia had to have been raised before the ALJ and have remanded all of the cases where the Lucia issue was raised at least before the Appeals Council. The issue of whether the issue had to have been raised at least before the Appeals Council is being litigated in the federal courts.
We have our first Court of Appeals opinions in one of the post-Lucia Social Security cases, Cirko v. Commissioner, a Third Circuit case. Social Security lost. The Court held that it did not matter that the Lucia issue wasn't raised until after the matter reached the United States District Court.
Social Security is still litigating this issue before other Courts of Appeals. It's possible that the agency will win elsewhere. If that happens, the issue will have to be decided by the Supreme Court.