wrongfully denied the right for an interview/employment

Hi,

I am a U.S. citizen, who worked for a U.S. multinational IT company. I applied within the same company for another position. The night before the scheduled interview, the interview was misteriously cancelled. The only explanation I got from my manager at the time was that HR has decided against me getting the position in spite of the fact that (supposedly) my manager and my manager's manager have supported my desire to move to a different position within the company.

I, as a U.S. citizen, strongly believe, that I was mistreated, or discriminated as far as my Employee/Labor Rights are concerned. Please advise if this is the case and if I have a case worth pursuing.

Upon request I will send the e-mail threads that includes my 1. request for an explanation from HR for the denial of an interview that was previously scheduled (almost a month past, but no response), 2. my thank you note to the company president and my explanation of why have I left the company (almost two months past, but no response), 3. responses from my collegues to my goodbye e-mail (reflecting the fact that I did a great job), 4. my goodbye e-mail to my collegues.

RI