1,拿绿卡后过去五年在海外超过四年,不是expat,还能申请到回美证吗
-Yes as long as your green card (i.e. your permanent resident status) is still valid.
2,如可以,递交申请后打指印之前可以离境再回来打指印吗
-You had better conduct the fingerprinting before you leave.
3,递交申请到打指印中间一般需要多长时间
-One to two months, but you may request expedited processing for biometrics appointment. see:
http://www.familytousa.com/family-to-usa/2012/1/14/requesting-expedited-biometrics-appointment-for-re-entry-per.html
4,非常感谢!!