Reply

我母亲年纪大了， 想放弃绿卡回国养老。 请问需要办什么手续吗？
-Yes. She needs to file I-407 to the US Consulate in China after she returns to China. See:
https://china.usembassy-china.org.cn/visas/immigrant-visas/us-citizenship-immigration-services-uscis/abandonment-status-form-407/
 

另外目前她护照上还有10年签证，如果想再来美国探亲有没有问题呢？
-This visa has been void after she got the green card. However, after she abandons her green card, she can apply for a new B2 visa again.

谢谢您！