President Trump criticized Tesla and SpaceX CEO Elon Musk's new political party on Sunday. 

Musk announced on Saturday he was creating the America Party.

Trump said that third parties have "never worked" and Musk's would just "add to confusion."

He also said Musk's party is ridiculous.

"He can have fun with it but I think it's ridiculous," Trump told reporters after stepping off of Air Force One.