Money is pouring to Europe from USA because cıstomers have more Money to buy goods. Every year more money invested to Europe than invested to China. I think they want to keep Paris streets clean and cafes open for American Soldiers.
It is not because France re-integrated NATO that you find US soldiers at every street corner. You should visit France someday or change your spectacles (one does not exclude the other).
"The problem with photography is that it only deals with appearances." Duane Michals
"A photograph is a secret of a secret. The more it tells you the less you know." Diane Arbus