WASHINGTON (AP) — Republican Sen. Marco Rubio of Florida says supporters of gay marriage often show "intolerance" toward people like him who support heterosexual marriages.

Greg Kabel

Rubio on Wednesday also told an audience at Catholic University that those who support abortion rights ignore the rights of "the unborn."

Trying to win forgiveness for pushing a failed immigration overhaul, Rubio is rushing to woo social conservatives ahead of a potential 2016 White House run. While Rubio has consistently held conservative positions on gay marriage and abortion, his emphasis now is an effort to find support among social conservatives who have yet to settle on a favored candidate in the presidential campaign.

Rubio says America cannot be a great nation unless it has great morals and values.