回复:请小白兔帮忙看看有什么意见-关于H1B ext, AP, AC21的问题
1,yes,but if CIS send you an approval notice without an I-94 showed H1B,you have to leave USA to get a H1B
visa to recover H1B status.
2,3,4 You may get a three years extension if you get a H1B visa. Whether current or new employor