JR Joaquin joins marchers in Charlotte, North Carolina, on Wednesday, June 26, 2013, in celebration after the U.S. Supreme Court struck down the Defense of Marriage Act.An unusual lawsuit in North Carolina is shifting the conversation about religious freedom — and could be driving a wedge between some major opponents of same-sex marriage. Clergy from the United Church of Christ, a liberal denomination that has allowed pastors across the U.S. to officiate at gay weddings since 2005, filed suit in a North Carolina district court Monday, becoming the latest in a nationwide series of cases against a state’s same-sex marriage ban. Like dozens of similar lawsuits filed across the country, the North Carolina suit argues that the state’s ban violates gay couples’ constitutional right to equal protection. But in a unique twist, the suit adds that the ban also violates the First Amendment right of members of the clergy to practice their faith — because the state’s ban criminalizes pastors who bless same-sex unions, leaving clergy open to arrest. More