Same-sex marriage is back in the Supreme Court. Here’s what a ruling will mean.

The Supreme Court on Tuesday, April 28, will hear oral arguments over whether states’  same-sex marriage bans are constitutional, setting the stage for a final decision on marriage equality by the end of June.

Federal appeals courts have disagreed on whether states’ bans violate the US Constitution’s 14th Amendment, leaving it to the Supreme Court to decide the issue.

Same-sex marriages are already allowed in 37 states and Washington, DC, but many hinge on lower courts’ decisions in favor of marriage equality.

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