I'm a Canadian Citizen trying to obtain U.S. citizenship from my U.S. citizen father. I've been denied once already last year due to lack of evidence of physical prescence (He moved to Canada when he was 9 and didn't satisfy the 2-year requirement after 14.)

I have since located an old document from the Canadian gov't that shows he was employed from 1992-1994 in the U.S. We don't have anything else besides this one piece of paper; no tax returns, nothing. We lived in a border town so he would have commuted. Are there any Consular Officers out there that would be able to tell me if this is admissible? The document shows who he worked for, the period of employment, and signatures from his employer. How deeply are these things looked into? My concern is that they will look into the company and discover it no longer exists, and then not believe us. The company was one of the larger communications companies that were caught for fraud in the early 2000's.