✔ 最佳答案
Hi, after getting the US citizenship, then u can file ur wife at once, probably only take 1-1.5 yrs for her greencard.
if she doesn't have US tourist visa, she needs to wait for the immigration visa in HK, around 8-10 months depending how many ppls. once she gets the immigration visa, she can use it to enter USA. when u enter in USA at airport, US officer will give her some document to sign, it's for her US greencard. then she will get her US greencard within 1 yr.
if she has US tourist visa, u can file her after getting married and after getting your US citizenship, use Form I-130 to apply US greencard. at the same time, u also need to file Form I-485 to change her status. Then she can wait for her US greencard in USA. it takes around 1-1.5 yr.
http://www.uscis.gov/portal/site/uscis/menuitem.eb1d4c2a3e5b9ac89243c6a7543f6d1a/?vgnextoid=db029c7755cb9010VgnVCM10000045f3d6a1RCRD&vgnextchannel=db029c7755cb9010VgnVCM10000045f3d6a1RCRD
remember! if u are only the US greencard holder, ur wife will take at least 5 yrs for her immigration. good luck and have a nice day!