The government's brief in U.S. v. Vaello-Madero, a case pending at the Supreme Court, is due today. The issue in Vaello-Madero is whether it's constitutional to deny Supplemental Security Income (SSI) benefits to U.S. citizens who reside in Puerto Rico and other territories.
President Biden has expressed support for legislation extending SSI to territories but there is little hope that legislation will pass. His Administration has not yet taken a position in Vaello-Madero.
The traditional principle has been that the Solicitor General, who handles cases for the federal government at the Supreme Court, should defend the constitutionality of any statute. Even before Trump came to office there had been exceptions to this princriple. The Trump Administration completely abandoned the tradition of defending the constitutionality of legislation it opposed. Joe Biden is a very traditional President but this case provides a strong temptation to abandon tradition.
The Solicitor General has already obtained two extensions of time to file a brief. In support of the last request for an extension of time, the Solicitor General said that "the brief requires consultation with a number of components of the government."
Extending SSI to Puerto Rico would be a big deal. There have been estimates that several hundred thousand people could qualify for benefits. Handling all those claims with no phase in and no time to prepare would be an enormous logistical challenge for the Social Security Administration that would affect operations across the entire country.
Update: The government hasn't yet filed its brief but the President has released a statement saying that although he believes that SSI should be available in territories that his Administration will follow the conventional practice and defend the constitutionality of the statute.
Further update: The Solicitor General had finally filed a brief. Don’t expect anything original in the brief. There’s a lot of talk about the income tax not applying to Puerto Rico and stare decisis.