Simply awesome news, and probably the start of of a trend. This will have broad impacts for Missouri LGBT couples, especially transgender couples where one partner is unable to change their legal sex.
Reading around the news sites for commentary on this announcement, some cynics have posited that the real reason this was done was to avoid a lawsuit brought by a same-sex couple for discrimination over their state taxes. However, most feel that this was primarily an initiative by Jay Nixon to expand LGBT rights administratively in the state.
I dearly hope Kansas and all other states follow Missouri’s lead.