Do you mean that US SS benefit now I receive will be reduced because I receive the Japanese pension? If so, at what rate? Will you point out the specific IRS regulation relevant to this?
Secondly, when I use the TAX software (H&R Block in my case), how should I report the money as income? There seems to be no appropriate place for that. It's certainly not part of US SS benefit, is it? Please advise me any relevant literature on this subject. Thanks. Ken