Several sharp-eyed readers suspected that Chai Vang, the "Minnesota man" who killed five other hunters in Wisconsin on Sunday was a Hmong. Reports published in the less racially-correct British media confirm it. The only remaining question is whether he is an immigrant or an "American"—i.e. born in the U.S.A. Meanwhile, our Brenda Walker faces expulsion from the Sierra Club for suggesting that importing more Hmong might be a bad idea.  Vang lived in St. Paul, whose mayor was enthusiastic for Hmong refugee resettlement. Ask him if he still feels that way. Ask the Sierra Club too.