The two reversals and the lapsed appeal signal a broadening effort by the Trump administration to prohibit or restrict class actions through litigation or regulation.

The Justice Department continues to defend the fiduciary rule, Obama-era regulations that raised standards for financial advisers, even as the Labor Department moves to revise provisions in the rule.

There's only one part of the rule the Trump Justice Department won't now support in court: a class action provision. In its July 3 filing in the U.S. Court of Appeals for the Fifth Circuit, the Justice Department, represented by Deputy Assistant Attorney General Hashim Mooppan, urged the court to strike down a provision restricting class action waivers in arbitration clauses.

The restriction on class action waivers is a condition on financial advisers who want to qualify for the fiduciary rule's “best interest contract exemption,” or BIC.

If they qualify, those advisers are exempt from certain prohibited transaction provisions in federal retirement laws. The U.S. Chamber of Commerce, a lead plaintiff in the case, has argued the condition violates the Federal Arbitration Act, or FAA. The Justice Department now agrees.

“Given the government's position in Murphy Oil, the government is no longer defending the BIC Exemption's condition restricting class-litigation waivers insofar as it applies to arbitration agreements,” Justice Department lawyers wrote in their brief.

The government's legal team said the condition is “a discriminatory obstacle to arbitration that cannot be harmonized with the FAA and [AT&T Mobility v.] Concepcion under the interpretation of those authorities adopted by the government in Murphy Oil.”

The government's flipped position in Murphy Oil “complicates things a lot,” said Deepak Gupta of Washington's Gupta Wessler, who has supported the provisions of the best interest contract exemption on behalf of the American Association of Justice. Gupta on July 6 filed an amicus brieffor the group.

“Depending on how expansively you read the solicitor general's brief, the worst reading is the FAA forecloses any effort to limit arbitration and class litigation unless there is some very, very specific delegation, a clear statement [in the statute],” Gupta told The National Law Journal.

In the fiduciary rule case, Gupta said, the government is not just announcing a change in position, but also telling the appellate court to vacate a provision in a government rule that regulators had successfully defended in lower courts.

“It leaves the case in this awkward position where the circuit court doesn't have an adversarial position,” Gupta said. “This is not how you're supposed to repeal rules. This is a faster, backend way of repealing an unwanted provision of the rule.”

Gupta wrote in the American Association of Justice amicus brief: “Because of the government's late-breaking change in position, no party before this Court is defending either the class-action provision or the district court's decision upholding it.”

The Labor Department is seeking comment on any proposed changes to the fiduciary rule, which went into partial effect last month. The rule doesn't fully kick in until Jan. 1, 2018—an effective date that federal regulators are weighing whether to delay.

A group of consumer advocates on Thursday July 6, in an amicus brief in the Fifth Circuit said the Justice Department reversed “its position without justification.”

The groups, including Americans for Financial Reform, Better Markets and Consumer Federation of America, said the issues in the Supreme Court's Murphy Oil case are distinct from those presented in the Fifth Circuit fiduciary rule litigation.

The fiduciary rule's best interest contract exemption, the consumer advocates said in their amicus brief, “does not prohibit the enforcement of existing arbitration agreements,” which is “the core focus” of the Federal Arbitration Act.

Other lawsuits challenging the rule are pending in Washington, Minnesota, and Kansas federal courts. In Minnesota, the plaintiff there, Thrivent Financial for Lutherans, seized on what it called the Justice Department's “surprise” filing in the Fifth Circuit.

The government's refusal to defend the fiduciary rule's class-action provision “supports entry of judgment in Thrivent's favor, not an indefinite stay of this matter. Staying this litigation would only prolong Thrivent's business uncertainty about its compliance obligations, in a manner that would be highly prejudicial to Thrivent,” Mark Johnson of Greene Espel wrote in a letter to the court .

The nursing home rule prohibiting mandatory arbitration agreements was issued by the Centers for Medicare and Medicaid Services, or CMS, last year. The American Health Care Association quickly challenged it and on Nov. 7, a Mississippi federal court imposed a temporary injunction blocking the rule.

The government had a June 2 deadline for an appeal, but the deadline lapsed with no government action. On June 5, CMS proposed a rule revision that would eliminate provisions that prohibit binding pre-dispute arbitration.

This story was updated with additional information from court papers filed in the Fifth Circuit on Thursday July 6.