Sharif,

There is no meaningful polygaph appeal process for U.S. citizens who are wrongly branded as liars by their government's polygraph operators. I think the situation can only be worse for non-citizens such as yourself.

I think it would be best to forget about ever working for the U.S. government again. You will have been blacklisted.

Our book The Lie Behind the Lie Detector may be of interest to you to the extent that it will help you understand how you could fail the polygraph despite telling the truth:

https://antipolygraph.org/lie-behind-the-lie-detector.pdf

You may wish to share this information with any friends, family, or colleagues who might consider seeking employment with the U.S. government.