The embattled agency has a major role in imposing and enforcing dozens of new regulations.
Insurance commissioners in roughly half the states have weighed in on the president's decision to allow people to keep policies that would otherwise have been canceled under the landmark health law.
"We’re probably sitting somewhere between 60 or 70 percent [completed],” an official said.
Republicans said it was troubling that Henry Chao had not read the audit of problems.
Democrats say their GOP colleagues are giving ObamaCare docs to the press before lawmakers.
Healthcare advocates are urging the White House to reject language they say would lock in high prices for biologic drugs.
Members of the House want to prevent the Centers for Medicare and Medicaid Services (CMS) from changing the rules for maintaining medical equipment that perform MRIs and other procedures.
A top Food and Drug Administration official told House lawmakers that the administration was “very concerned” about the threat of bacteria that are immune to antibiotic drugs.
The delay is keeping new ingredients, which could help prevent skin cancer, from being used.
“It threatens the solvency of the system," said Jim Donelon.