Hey, Asian dudes.....

[Boris]

They are an ethnic minority in Laos. Many of them helped the US during the Vietnam War. For that reason, large numbers emigrated to the US. INS (or whatever department that deals with this sort of thing) scattered families randomly across the US. However, since people in general like to hang with their own kind, the Hmong congregated in places you wouldn't expect, like the Twin Cities and Missoula, MT.