State litigation against the federal government has increased dramatically since the Clinton administration, Daniel B. Rodriguez, of Northwestern University Pritzker School of Law, Chicago, said Aug. 3 during a panel at the American Bar Association’s annual meeting in Chicago.

There was a noticeable jump in such litigation during the Obama administration, as red-state attorneys general sought to counter what they saw as executive overreach, Misha Tseytlin, the Wisconsin Solicitor General, said.

But the Trump administration, still less than...