Trying to align lawmakers with the people they represent, Congress three years ago decided that when the new healthcare plan took effect, members would give up their platinum health benefits and enroll in the online marketplaces created for millions of other Americans. In typical congressional fashion, however, things have not worked out exactly as advertised. While many members of Congress are indeed signing up for health coverage through the District of Columbia exchange — which was designated as the provider for all members — their experiences have been significantly better than those of average consumers in several respects, including more...