I never really know this married man. He goes behind my back and destroys my life including my career, my relationship with my boyfriend. He is a politician. He knows I have no family here, and most of people who I helped before are helping him now because he pays them. Frist , he used a security clearance as excuse getting my info from them until people find out the truth, he just does whatever he wants now.
My questions:
1. Why is the reason this politician hurts a woman who has nothing to do with him
2. How can I stop this? I sent several emails but does not help.

Your post is very vague and cryptic. It's extremely hard to help you with such limited information.

Document your allegation and make a police report, or better yet consult a lawyer with your evidence.