Thank you very much! One more question though

来源: 于 2015-08-23 13:38:57 [旧帖] [给我悄悄话] 本文已被阅读：次

If my parents need to file income tax, what documents they need to show to IRS to prove their foreign income (i.e., 退休金) ? 

Many thanks for your constructive comments!