If any of them came in the boat lift, or lived in Vietnam, NO must seem like heaven. Plus, they know not to wait on the government for help.
Yes, the New Orleans area gained a large Vietnamese population after Saigon fell. I was in 7th grade at the time. The Jefferson Parish Shool District segregated them for 3 semesters to bring them to English fluency. (Try that with today's immigrants!)
When they joined our regular classes, they were kicking our butts in Science and Algebra...they were MUCH more advanced than we were. Most are now entrepreneurs and degreed professionals. They added much to the New Orleans melting pot.