Enrollees would be able to choose to be automatically enrolled in cheaper coverage.
The rates deal a blow to critics who predicted substantially higher premiums.
Critics of the Affordable Care Act have warned premiums will soar under the rules and regulations...
Covered California enrollees' rates will rise an average of 4.2 percent, officials said.
Waxman said an HHS report "proves conclusively" that consumers are paying less under O-Care.