MCHA to Close 12/31/14 Insurance companies can no longer deny you or charge you more because of your pre-existing health condition. As a result, the Minnesota Comprehensive Health Association is no longer accepting new enrollees (for a Jan. 1, 2014 effective date or later) and will close on December 31, 2014. We encourage you to look for a plan on MNsure, Minnesota's online insurance marketplace, or visit myMCHAagent.com to find an agent.