You probably recognize Sen. Rob Portman from his tireless campaigning for Mitt Romney in 2012. He was even on the short list to be Romney's running mate.
He's been a leading Republican voice on economic issues for four decades.
Now, the prominent Ohio conservative will be known for something else: reversing his hardline position against gay marriage.
He invited CNN to his Senate office to reveal the news.
"I'm announcing today a change of heart on an issue that a lot of people feel strongly about that has to do with gay couples' opportunity to marry," Portman told CNN.
It has to do with another revelation, one deeply personal. His 21-year-old son, Will, is gay.FULL STORY