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来源: 于 2023-03-21 08:06:38 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

It is nearly impossisble for them to get the SB-1 visa. My suggestion: they had better abandon their green card, then apply for B2 visa to visit you.  It may take a few months for green card abandonment process.

See this link for green card abandonment for Chinese:

Abandonment of Status (Form I-407) - U.S. Embassy & Consulates in China (usembassy-china.org.cn)