回複：在大學工作來美三年內聯邦稅和州稅都免嗎? -WRONG

You can get $5000 deduction (US-China treaty article 20) towards your Adjust Gross Income, AND you don't pay FICA (social security and medicare). If after all deduction, you are still subject to federal tax (you must have really high assistantship! :-)), then you do need to pay taxes. But most don't have to.

I don't think it is 3 year, but should be 5 year. After 5-year period, the $5k would not be applicable...