Matter of fact, the reason you are hearing this is because someone posted a picture of a "Make America Great Again" hat showing a tag that said it was made in China. The thing is, it was not a hat made for Trumps campaign. People are taking advantage of Trumps popularity and reproducing hats that say "Make America Great Again" to make a buck. As you could see in the picture I added of my own hat, it is indeed made in america. Then there's something else. I read an article about The Associated Press testing the fabric of a sample and thought it did not contain the specific type of fabric the manufacturer said it did. So the fabrics origin is unknown, apparently. Of course Trump responded to the claim saying, "I pay a good price for that hat. If it's not made in the USA, we'll bring a lawsuit." So, in conclusion, even if the fabric did come from China, Trump was assured by the company all pieces were made in America. He intended for it to be that way and paid the price for it. If it is not what the company said it was, he will take action against the company.
If you order a hat from Trumps campaign site, you will get a hat that was made in america. If you go to ebay or amazon, it will probably be made in China. Buy your hats from Trump guys! The money goes to his campaign.