Trump vows to bypass Congress and impose new tariffs after the Supreme Court blocked his import taxes. The U.S. president said in a press conference he is “absolutely ashamed” of the six Supreme Court justices who ruled against him “for not having the courage to do what’s right for our country.” Here's more from @AssociatedPress.
Congress has enacted a few different laws that allow the president to impose tariffs. He was just such an idiot that he used one of the few laws that isn't actually available to him.
It's pretty complicated, but yeah, there are a few different laws that he could have used this whole time.