Idaho’s ban is seen by some experts as a bid to bring a case before the U.S. Supreme Court with hopes of overturning federal protections on marriage for LGBTQ couples.

GOP lawmakers in Idaho are pushing to end same-sex marriage by sending a letter to the U.S. Supreme Court asking it to overturn its landmark decision.

Idaho’s Republican-dominated state House of Representatives formally called on the Supreme Court to reverse a 2015 ruling that enshrined a fundamental right of same-sex couples to marry. On Monday, Iowa’s House voted 46-24 to pass a resolution that states the legislature rejects the landmark ruling in Obergefell v Hodges and calls on justices to “restore the natural definition of marriage,