Although the rule is designed to stabilize the marketplace and encourage issuer participation while an alternative health care law is being developed, health care legal experts aren’t so sure it will have that effect.

“While I think this proposed rule has some helpful elements and has features that issuers have asked for to varying degrees, it’s not going to change the overall uncertainty of where the marketplaces, where the exchanges are going,” says Christine Clements, a partner in Crowell & Moring’s health care group.