Same-sex marriage "Decision Day" rally planned in Jackson Square_lowres

Same-sex marriage supporters rally in Jackson Square in 2014.

Update, 9 a.m. June 23: The U.S. Supreme Court has ruled same-sex couples can marry in all 50 states. The Jackson Square rally is 5:30 p.m. tonight, June 26.

The U.S. Supreme Court is expected to rule this month in a landmark decision that could decide the legality of same-sex marriage in all states.

Forum For Equality, the ACLU of Louisiana, Human Rights Campaign, and Parents, Family and Friends of Lesbians and Gays (PFLAG) will host a response rally in Jackson Square at 5:30 p.m. Monday, June 29, or the day of the Supreme Court ruling. Plaintiffs in the Louisiana case will hold an after-party at 7 p.m. at Oz New Orleans (800 Bourbon St.) following the rally. The date isn't set in stone; the rally will be on the day the court makes its ruling.

In January, the high court took up reviews of cases in four states (Kentucky, Michigan, Ohio and Tennessee) and heard oral arguments in April. The court is set to determine whether the 14th Amendment requires the state to issue same-sex couples a marriage license as it does for other couples, and whether the 14th Amendment requires states to recognize same-sex marriage licenses issued in other states (lawfully, under those states' same-sex marriage laws). Thirty-eight states currently allow same-sex marriage. Louisiana's 5th Circuit Court of Appeals also is reviewing an appeal in a Louisiana case challenging the state's constitutional ban (approved by voters in 2004), but the court is expected to delay its decision pending the Supreme Court's.

In April, Gov. Bobby Jindal doubled-down on the state's opposition to same-sex marriage in an op-ed in The New York Times. A measure from state Rep. Mike Johnson, R-Bossier City, attempted to jump ahead of the Supreme Court's likely support of same-sex marriage with the "Marriage and Conscience Act," but that bill failed in legislative committee. Jindal, however, issued an executive order to keep the measure's intent alive.