回复：急需帮助

我拿HI，2007年2月交的485，手印也盖了。我想回国工作，我儿子想在美国读高中，请问，如果我回国，申请移民就失效了，对吧？
-Yes, unless you find a U.S. employer to support your GC application and you will come back to work for the employer after you get the green card.

我儿子怎么样合法留在美国读中学， 多谢大家帮助！
-Your son needs to get an F1 status if he did not file I-485 yet (he can be F1 status only for one year in a public high school ). If he has filed I-485 and your green card application is invalid, your son's status will be big problem in u.S.