答复如下

Will I be able to change job while the I-485 pending is more than 180 days? I know the answer is YES. I-485递交180天后可以换工作 according to AC-21. Is it not required to transfer H1b to the new company? 在法律上, 我不必保持H1b 非移民身份, 对吗?

不必保持H1身份，用EAD即可。

(2) I-485递交180天后换工作需书面通知移民局吗?

不需要。移民局有问题就发RFE找你。不过你要记住报告变换地址：AR11 和联系地址。

(3) I plan to start a business as the unique owner using my EAD. Can I be both the owner and the president? Can I work for my own company? How many employees do I have to hire? 投资移民 needs to hire 10 employees with US Citizen or GC holder.

AC21 2005年memo上允许AOS self-employment,但主申请人要符合申请140时的job duty.这点要慎重考虑。

(4) 我有两张一样的 AP papers. 上月回中国返回时, 移民局收去一张, 是否能用另一张再回国一次?

可以，1年有效期内。