The original idea for the first film's comic book about the American Secret Service who call themselves "Uncle Sam." In the sequel, the Kingsman are teaming up with their American counterpart who call themselves the Statesman.
In the teaser trailer scenes are shown of a modern diner and other classically "American" structures amidst Mayan/Aztec ruins in Central America. This could be a possible reference to Fordlandia, an "All-American Small Town" built in the middle of the Brazilian jungle by Henry Ford to grow and processor rubber for car tires.
Fox was originally planned to have a world premiere of the movie in New York on September 12 but canceled it to help out with the Hurricane Harvey relief telethon by donate the money budgeted for its Kingsman soiree to Hand in Hand: A Benefit for Hurricane Harvey Relief that same night.