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.
Requests for abatements may be submitted online or in writing at any time: within 3 years from the date of filing the return or due date, whichever is later, within 2 years from the date the tax was assessed or deemed to be assessed, or.