J.K. Rowling has made it very clear a few times now that she isn't a fan of Mr Trump.
She has once again made a burn to Trump by replying to a simple tweet from a guy named Oliver Willis after he tweeted out that "Slytherin Alumni go far! CUT TO MONTAGE of Jared Kushner, Eric Trump, Donald Trump Jr"
Of course referring anything to Harry Potter you are going to attracted J.K. It only took 10 minutes for her to reply to the tweet simply saying.. "You've got to get the letter before you put on the hat, Oliver."
For anyone not super familiar with the delightful world of Hogwarts, Rowling is basically saying that Kushner, Eric and Donald Jr. wouldn't even make it into the wizarding school in the first place.
Sorry, Trumps: you're clearly not magical enough. 10 Points to J.k.