Republican Kentucky Sen. Mitch McConnell is expected to announce he will not seek reelection Thursday, according to multiple reports.

McConnell, 83, led the Senate Republican conference for nearly two decades until he stepped down from his leadership post at the end of the last Congress. There was widespread speculation that the former Republican leader would retire following his decision to oppose several of President Donald Trump’s high-profile cabinet picks and advocate against the president’s America First foreign policy views.

“Seven times, my fellow Kentuckians have sent me to the Senate,” McConnell is expected to say on the Senate floor Thursday. “Every day in between I’ve been humbled by the trust they’ve placed in me to do their business here. Representing our commonwealth has been the honor of a lifetime. I will not seek this honor an eighth time. My current term in the Senate will be my last.”