Their polygamy will cease ASAP in the US. They are determined to become Americans, unlike some other immigrant groups. They will make arrangements within their family groups for the care of second wives and will be monogamous and they will not just abandon extra wives. The Hmong start from a lower educational base than the Kinh (ethnic Viet) and will have a harder struggle but they will survive and thrive. Most come as Christians (protestants) or will convert on American soil and have the enthusiasm of converts for the religion and for their new society. In those communities where the churches sponsor them they have a major leg up on the system.
"Their polygamy will cease ASAP in the US. They are determined to become Americans, unlike some other immigrant groups."
Exactly. I need not say more.