22 out of 50

• Alabama (June 23rd, 2014)
• Alaska
• Arizona
• Arkansas (June 25th, 2014)
• California
• Colorado (June 23rd, 2013)
• Connecticut (August 20th, 2012)
• Delaware (November 17th, 2012)
• Florida (January 17th, 2014)
• Georgia (March 22nd, 2014)
• Hawaii (August 15th, 2014)
• Idaho
• Illinois (May 24th, 2014)
• Indiana
• Iowa
• Kansas (June 25th, 2013)
• Kentucky
• Louisiana (June 23rd, 2014)
• Maine
• Maryland (November 17th, 2012)
• Massachusetts (November 2nd, 2013)
• Michigan
• Minnesota
• Mississippi (June 23rd, 2014)
• Missouri
• Montana
• Nebraska
• Nevada
• New Hampshire
• New Jersey (August 23rd, 2012)
• New Mexico
• New York (August 20th, 2012)
• North Carolina
• North Dakota
• Ohio
• Oklahoma (June 25th, 2013)
• Oregon
• Pennsylvania (December 22nd, 2012)
• Rhode Island
• South Carolina (March 19th, 2014)
• South Dakota
• Tennessee (March 17th, 2013)
• Texas (June 25th, 2013)
• Utah
• Vermont
• Virginia (November 17th, 2012)
• Washington
• West Virginia
• Wisconsin
• Wyoming

+ Washington DC as a federal district (November 17th, 2012)