WASHINGTON (AP) — Donald Trump says he appreciates House Speaker Paul Ryan, but the president-elect also is warning the top congressional Republican not to cross him.

At a rally Tuesday in West Allis, Trump praised the Wisconsin politicians in attendance. When Ryan drew boos, Trump said he was “like a fine wine. Every day that goes by I get to appreciate his genius more and more.” He added, however, “if he ever goes against me I’m not going to say that.”

Trump and Ryan were at odds throughout the campaign, with the speaker declining to campaign for the GOP nominee after a video emerged of Trump making predatory remarks about women. Since the election, Ryan is all-in on Trump, even repeatedly using the Trump slogan, “Make America Great Again.”