Just days after giving governors more time to declare whether states would commit to running online marketplaces for subsidized health coverage, the Obama administration released hundreds of pages of proposed rules on required benefits and other aspects of implementing the federal health law.

But Arizona Gov. Jan Brewer still has important unanswered questions about the health exchange, particularly about how a federally created exchange would work if the state were to choose that option, Brewer health policy adviser Don Hughes told The Associated Press.