since the war's end (US version), I'm not sure of all the factors involved. I said 'war memories are durable'; the Hmong caught flak from any Communist or nationalistic government for helping the US forces. (And remember that the late 'humanitarian' Dr. Tom Dooley was outed as a Laos-based CIA informant early on.)
Add to this the Hmong's aboriginal status in Indochina, and you have the ingredients for a long-term - and increasingly irrational - "discrimination". Actually, I think the thrust of the story that led to the previous thread was that the Hmong are being treated decently here; even given their own schools which will make them bi-lingual. (And some posters objected to the implementation, as I recall.)
My observation, still valid IMO, is that many of you 'Nam vets don't know (or don't care) about their plight there or here, and they were once your allies even unto death. Probably few of you knew back then, but the information has been public at least since '75. A good lesson for all of us who are too ready to trust our welfare to the words of other men.