From the New York Times live blog of today’s oral argument on the case presenting the issue of whether the 14th Amendment confers birthright citizenship on all born in the U.S, as well as an important issue on universal injunctions:
Sauer [the Solicitor General] says the administration would follow a Supreme Court ruling on the constitutionality of birthright citizenship. But he hedged on whether it would follow federal appeals court rulings within their geographic jurisdiction, saying the government “generally” would do so.
This issue has quite a history at Social Security, although not a recent history because the government had completely given up on it.