As the kickoff for the FIFA World Cup approaches, the U.S. is preparing to host millions of hopefully big-spending travelers from around the world. The World Cup is just one of several upcoming “mega-events” in the U.S., including America’s 250th anniversary, the 2028 Summer Olympics in Los Angeles, and the 2034 Winter Games in Salt Lake City. At the same time, the U.S. is angling to attract a wave of foreign investment, which will require plenty of business travel as well.