Mr. Pallone is in line to be chairman of the Energy and Commerce Committee. Mr. Neal is expected to be chairman of the Ways and Means Committee.
In issuing the guidance, they said, Mr. Azar also violated the Administrative Procedure Act, which generally requires agencies to provide an opportunity for public comment before adopting new rules.
Republican governors have been pleading with federal officials to give states more authority to regulate health insurance.
Paul Edwards, a deputy chief of staff to Gov. Gary Herbert of Utah, a Republican, said, “Utah welcomes all efforts that give us maximum flexibility to structure our health care programs to the unique needs of our citizens.” State officials “will look closely at how these new rules could benefit Utahns,” he said.
Brenna Smith, a spokeswoman for Gov. Kim Reynolds of Iowa, a Republican, said the governor “has a proven track record of expanding health care options for Iowans and is eager to see the new opportunities this proposal might open up.”
Iowa tried last year to get a waiver under Obama-era guidance, seeking essentially to opt out of the Affordable Care Act marketplace by offering customers a single plan with lower premiums and a high deductible.
Ms. Reynolds ultimately withdrew the request in frustration, saying at the time that “Obamacare’s waiver rules are as inflexible as the law itself.”