President Trump [Air Force One]: I think the mayor of London, Khan, is among the worst mayors in the world, and we have some bad ones. If you look at Chicago, if you look at; I think he's the equivalent of the mayor of Chicago. I think he's done a terrible job. Crime in London is through the roof. The mayor of London, Khan, has done a terrible job, and on immigration, he's a disaster. I asked that he not be there [UK State visit]. He wanted to be there, as I understand. I didn't want him.