回複：請教下：J-1簽有什麽最快的方法通過合法轉簽形式留在美國

J-1 au pair, so you are also attending a US college now? Not sure whether Chinese J-1 au pair is subject to 212e, but I don't think so. So you can change to F1 student in US without J-1 waiver, you may need to get DOS letter that your category is not in the skills list.