ALEXANDRIA, Va. — A congressman under investigation for bribery was caught on videotape accepting $100,000 in $100 bills from an FBI informant whose conversations with the lawmaker also were recorded, according to a court document released Sunday. Agents later found the cash hidden in his freezer. At one audiotaped meeting, Rep. William Jefferson, D-La., chuckles about writing in code to keep secret what the government contends was his corrupt role in getting his children a cut of a communications company's deal for work in Africa. As Jefferson and the informant passed notes about what percentage the lawmaker's family might receive,...