The U.S. has no formally recognized official language. There have been attempts to declare English the official language, but none have been successful. There have been successful attempts in the U.S. to limit other languages from gaining prominence or reduce their use. German was extremely common in the original colonies, but English advocates were successful in defeating votes to print official documents in German in addition to English.
France in contrast has French as an official language, and is also very active in promoting and defending the use of French as a language. France also has an official body dedicated to regulating French as a language which helps with the perception of them more actively promoting French than the U.S. promotes English.
While the U.S. may not do much in the way of official support of English there is a huge amount of soft pressure created by trade dominance, tourism, the internet, etc. The current political climate also limits to a small degree what the U.S. could do to support English without being labeled xenophobic, Racist, Imperial, or otherwise criticized.