BUZZZZERRRRRRRRRRRRRRRRRRRRRRRRRRR INCORRECT. Those are the Miao of China. That is the name of hmong in mandarin/catonese. They are the relatives that had not left China to the south after various dynasties and communist attempts of mass extermination in the last three thousand years.
Comixbooks = errrr wrong again. The hmong helped the US fight the communists of Vietnam and Cambodia in the Vietnam War (known as the secret wars since they were recruited by the CIA and it was against "rules" for the US to be in Laos.
The hmong saved thousands of US soldiers lives by disrupting the supply lines on the ho chi trail. Thanks to the CIA and US it led to the genocide of the hmong for helping the US against communism. Be kind to your fellow Americans =)