WASHINGTON, Feb. 14 - The Senate subcommittee on investigations says it has documents showing that the former head of the United Nations oil-for-food aid program may have made as much as $1.2 million personally from illegal oil shipments by Iraq. The officials said in a briefing on Capitol Hill late Monday that they based the conclusion on documents written by the Iraqi Oil Ministry under Saddam Hussein and on reports prepared for the new oil minister after Mr. Hussein was overthrown in 2003. A subcommittee hearing about the oil-for-food program is to take place on Tuesday. An independent investigation...