More than 569,000 people selected an Affordable Care Act plan through healthcare.gov in the fourth week of open enrollment, which lifts total signups since Nov. 1 to more than 3 million, CMS says in its latest marketplace snapshot. The agency says it is encouraged by the numbers -- which show 156,000 more signups than at the same point last year for the 33 states that continue to rely on the federal marketplace. CMS reports that of the 569,293 plan selections...