Barack Obama received $10,000 in campaign contributions for his 2004 US senate primary run - far exceeding the maximum amount permitted by law - from Mr. Raghuveer Nayak, an Illinois businessman, now caught up in the federal investigation of Illinois Gov. Rod R. Blagojevich. On Sunday the New York Times reported that Mr. Nayak had offered to raise money for Mr. Blagojevich on behalf of Rep Jesse L. Jackson Jr. The Times also reported that Mr. Nayak and his wife, Anita, have donated nearly $17,000 to Mr. Obama’s campaigns since 2003 and raised thousands more for Mr. Obama's 2004 Senate...