Same-sex marriage is likely to become a major issue for Republicans thinking about running for the White House in 2016.
The Supreme Court on Monday denied appeals from five states that sought to prohibit same-sex marriage, effectively clearing the way for gays and lesbians to marry in 30 states.
The decision reignites a Republican debate over the divisive social issue of whether marriage should be defined as between a man and a woman.
The dispute exposes existing tensions between pragmatic Republican officials and religious conservatives.
After the court's decision, some high-profile conservatives lashed out against what they called judicial activism, while others sidestepped the issue.