Senate Majority Leader Mitch McConnell and Texas Senator Ted Cruz are among the 57 congressional Republicans calling on the Supreme Court to uphold gay marriage bans.

The nation's highest court will hear oral arguments in a case challenging bans in four states on April 28, with a ruling expected in June.

In a brief filed at the Supreme Court on Friday, the GOP lawmakers argue that voters and their elected legislatures should decide the issue, not judges, the AP reported.

Cruz, who is running for the 2016 Republican presidential nomination, is an outspoken opponent of marriage equality. At a campaign stop this week in Iowa, he called for prayer in support of such bans.

(Related: Ted Cruz calls for prayer in support of gay marriage bans.)

Last month, 218 members of Congress, including 7 Republicans, called on the justices to strike down the bans.