Sweetheart mortgage loans to Senators are much in the news of late, with calls for increased scrutiny of the solons' dealings with their mortgage lenders. In this spirit, I took a look at some of the publicly available information on Senator and Mrs. Obama's mortgage, obtained in 2005 when they purchased their mansion in Chicago's upscale Hyde Park district. The Obamas purchased their home with the help of his friend Tony Rezko, recently convicted of a felony. His wife Rita purchased the adjoining lot, the former side yard of the mansion, to seal the deal. According to the mortgage documents...