Arkansas' odd Medicaid provision

... that it had to do with funding: Arkansas would request permission for this project under Sec. 1115 of the Social Security Act, which is separate and apart from the section that deals with Medicaid (that would be Title 19, for all those curious). ...

http://www.washingtonpost.com/blogs/wonkblog/wp/2013/04/18/want-in-on-arkansas-medicaid-expansion-youll-need-to-agree-its-not-an-entitlement/