That may be what they were doing. I don’t know the details, but I’m willing to bet they got caught when a shipment was opened for a random taxes-and-tariffs check at customs, and questions needed to be asked about why a crate of shirts that said “made in USA” were in a container that came from China
Edit: Nevermind, the truth is so much stupider than I imagined. According to the linked source, he got caught because he literally bragged about switching the tags on social media. 
