Senate Majority Leader Mitch McConnell said he has talked to Mitt Romney about a possible run for the U.S. Senate in 2018, but that he will back incumbent Republican Orrin Hatch if he decides to run again.

"I've had some conversations with Mitt Romney," McConnell, R-Ky., said Friday. "Obviously, I'm an Orrin Hatch supporter. Orrin Hatch has to decide what he wants to do. If he wants to run again, I'm for him."

Hatch first took office in 1977 and is the longest serving GOP senator. He serves as the Senate President pro tempore and is chairman of the Finance Committee.

Romney is the former Massachusetts governor and ran as the GOP presidential nominee in 2012.