回复:如果人不在美国的话
If you are in China (outside US) and lose your green card there, you need to go to the US Consulate to get the transportation letter to enter US, then file I-90 to get the replacement. No choice.
See these websites for applying for transportation letter:
http://www.immihelp.com/greencard/lost-stolen-greencard-transportation-letter.html
http://guangzhou.usembassy-china.org.cn/transportation-letter-application-for-losing-green-card.html
