We also have plenty of French-inspired cities, such as Baton Rouge, there is also an entire culture called Creole, that blends the culture of the French with Spanish, more Carribean is anything.
The United States allowed immigration to help the victims avoid the Holocaust although not in the larger numbers that could have been more helpful. The United States entered the war in 1941 and also attacked Germany in retaliation. The Holocaust continued because the Nazis had a very well organized system of apprehension of people that were put in the camps.