Enroll­ment has dropped near­ly 4% in those areas cov­ered by the Fed­er­al Exchange, but remained about the same in states that ran their own (e.g. Cal­i­for­nia).  Mean­while, a“Treasury watch­dog” report­ed that the IRS over­paid the ACA tax cred­its by $3.5 bil­lion in 2017.  The good news is that the total was actu­al­ly $5.8 bil­lion but they were able to get recov­ery on the amounts that can be recov­ered – but the rest seems to be lost. Oops.