Congressman William Jefferson of Louisiana is currently under investigation by the FBI for allegedly taking bribes from a company seeking business in Nigeria and, as I reported last week, the feds are apparently also looking at his ties to São Tomé and to some Americans doing business in that African country. Since then, I've received additional information that points even more strongly to a São Tomé-Jefferson connection. It gets complicated, but stay with me. First I'll explain the history of a small energy firm called ERHC, which was born in Lafayette, Louisiana, but is now based in Houston. Next, I'll...