Under the Affordable Care Act, Medicaid eligibility will be expanded to all U.S. citizens under the age of 65 with incomes less than 138 percent of the federal poverty level beginning in 2014 – unless some states decide to opt out of the expansion. That possibility arose as a result of the Supreme Court ruling on the ACA.
Some governors have already announced their intention to drop out, citing budget concerns but also partly for political reasons. Colorado and many others states will make their decisions after getting cost estimates.