www.commonwealthfund.org/Publications/Fund-Reports/2014/Jan/Implementing-the-Affordable-Care-Act.aspx
"States varied significantly in their approach to implementing the Affordable Care Act’s three major components, but states were most likely to take new action to implement the market reforms. These reforms include access to coverage for young adults, a ban on preexisting condition exclusions, the coverage of a minimum set of essential health benefits, and a ban on lifetime limits for health care coverage, among other critical consumer protections. To date, 32 states and the District of Columbia have taken new legislative or regulatory action on at least one of the market reforms. Of these, 11 states addressed all of the reforms studied in this report."
