If you work for the post office, you're a civil servant. The Civil Rights movement focused on the notion that all American citizens were entitled to the same basic civil liberties.
There is also time limit to consider for sending the amended returns, and it is generally three years from the time you filed the returns or two years after the tax payment (whichever is later). If you plan to amend more than one tax return, you have to file separate 1040X for every one you want to change.
The refund should take about SIX weeks from the day IRS received it but if you used eFiling it should take less than THREE weeks. That is if you filed a complete and accurate information there are no problems with your taxation.