President Barack Obama is in the homestretch of his time in the White House, but there was no way he was going to leave office without slow-jamming the news at least one more time. 

On Thursday, host Jimmy Fallon welcomed the leader of the free world to NBC's "Tonight Show." In addition to helping Fallon with what has become a recurring segment for the pair, "Slow Jam the News," Obama weighed in on the 2016 presidential race and the state of the Republican Party. 

While Obama did make a few jokes at presumptive GOP nominee Donald Trump's expense — he joked that Democrats were happy the GOP was going to nominate the businessman — he also expressed genuine concern for the GOP, citing Trump's nomination and Senate Republicans' opposition to holding a confirmation hearing for Supreme Court nominee Merrick Garland.  

"The truth is, I am actually worried about the Republican Party," Obama told Fallon. "This country works when you have two parties that are serious and trying to solve problems. And they've got philosophical differences, and they have fierce debates, and they argue and they contest elections. But at the end of the day, what you want is a healthy two-party system."

Obama also had a lot to say about the 2016 election. The president's "Tonight Show" appearance came just hours after he officially endorsepresumptive Democratic nominee Hillary Clinton, though the appearance was taped Wednesday, the day before the endorsement. Speaking with Fallon, Obama shied away from an explicit endorsement of Clinton. 

"[Clinton] is whip-smart, she is tough and she deeply cares about working people and putting kids through school and trying to grow our economy," Obama said. He also acknowledged the impact Vermont Sen. Bernie Sanders' campaign has had on the race. 

"It was a healthy thing for the Democrat Party to have a contested primary," Obama argued. "I think Bernie Sanders brought enormous energy and new ideas and pushed the party and challenged them. I thought it made Hillary a better candidate."

Obama had a little bit of fun as well. The president helped Fallon out with his popular "Thank You Notes" segment and, of course, joined Fallon to "Slow Jam the News," taking a few shots at Trump.