[JURIST] The Minnesota Senate [official website] on Wednesday approved a voter referendum [SF 1308 text] to amend the constitution to ban same-sex marriage [JURIST news archive]. The measure was approved by a vote of 38 – 27, with only one Democrat joining Republicans in supporting the amendment. Minnesota law currently defines marriage as a union between one man and one woman, but proponents say that a constitutional amendment is necessary to protect against same-sex marriage being legalized by a court….