Some states have extended sign-up deadlines.
Health reform implementation
A department spokeswoman quashed speculation that began with a New York Times report this week.
Rep. Stephen Lynch, who opposed the law, said it might cost Democrats the Senate in November.
Sen. John Thune (R-S.D.) called President Obama’s announcement that 8 million people have enrolled in ObamaCare a “victory lap” that was an “insult” to those who lost the coverage they had before the law was enacted.
As ObamaCare enters its fifth year, big questions remain about how the law is working.
Republicans say Census's action will obscure the effects of ObamaCare on insurance coverage.
The number represented sign-ups on the marketplaces so far.
State insurance officials said they heard the figure from Obama during Thursday's meeting.
Health insurance executives and state insurance regulators are coming to the White House.
Opinions of Sebelius's job performance broke along party lines.