More than 21 million enrolled in Obamacare plans this year, however, federal regulators are contending with rogue brokers who have signed people up for ACA plans, or switched them into new ones, without their permission.

A lawsuit filed Friday outlines a moneymaking scheme by which large insurance sales agency call centers bought names of people who responded to misleading ads touting free government "subsidies."

After it was discovered that some agents were switching consumers' ACA plans without their permission to garner the commissions, the CMS now mask the first 6 digits of the Social Security numbers on the ACA site.