John Kennedy actually said...
So if you can find new markets, if you can persuade others to come to the United States--we lose in our balance of payments every year $1,800 million on tourists alone; if we could get as many people to come here and spend the same money that our peripatetic, ubiquitous Americans spend, Senator, traveling around--if we could get them, we could solve our balance of payments problem.
10/17/1963