David Lassoff, who runs the company IncredibleGifts, told ABC News that prices of the hat could double from between $9 and $12 to at least $20 if he is forced to abandon his Chinese manufacturers and make the hats in the United States.

The hat, Lassoff said, is his website’s best-selling item. He claims to have sold hundreds of thousands of the hat.

“We usually sell the MAGA hats for around $9 to $12. But it could go up to $20 if we had to make them in the U.S. and embroider them here,” Lassoff said.