Nowadays, some people claim that the U.S. Congress had the intention of making German the official language of the newly founded U.S.A. at the end of the 18th century. According to these claims, the alleged proposal was eventually rejected by just one single vote. However, this is actually a historical myth. Those days an overwhelming majority (app. 90%) of the inhabitants of the U.S.A. spoke English.
The House of Representatives once suggested that all laws should be published in both English and German because there was a significant number of German citizens in some American states (esp. Pennsylvania). But this proposal was not popular at all and was rejected immediately.
Marriott, Emma. Bad History: How We Got the Past Wrong. London: Michael O’Mara Books Limited, 2011.