Odds are very low of a revival of French in Louisiana.
https://en.wikipedia.org/wiki/Langua..._United_States
In addition, immigrants coming to America aren't coming from native French speaking nations in large volumes.
Quote:
As of 2011, there were an estimated 150,000 to 200,000 people in Louisiana who speak French. By comparison, there were an estimated one million native French-speakers in Louisiana in about 1968. The dialect is now at risk of extinction as children are no longer taught it formally in schools.
Many question whether the Louisiana French language will survive another generation. Some residents of Acadiana are bilingual though, having learned French at home and English in school. Currently, Louisiana French is considered an endangered language.
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https://en.m.wikipedia.org/wiki/Louisiana_French