REUTERS/Carlos Barria
Speaking with reporters outside the White House on Wednesday, the president mocked the league's television ratings,
"The NFL is in a box, a really bad box," Trump said, speaking with reporters outside the White House.
"In my opinion, the NFL has to change or their business is going to go to hell," he said.
Players, coaches, and owners have spoken out against Trump's criticism of protesting players. During a rally Friday, Trump ignited controversy when he said NFL owners should fire any "son of a bitch" who kneels during the anthem.
The president and his top allies have continued to defend his comments, saying kneeling players are disrespecting the American flag and national anthem.
In a freewheeling process similar to other impromptu exchanges before a trip to Indiana, the president also made a number of eyebrow raising comments.
Trump said he was not pleased with Department of Health and Human Services Secretary Tom Price following reports of his uses of government-funded private jets. When asked if he would fire Price, he said, "We will see."