The architect of the largest U.S. college admissions fraud scheme ever uncovered was sentenced on Wednesday to 3-1/2 years in prison for helping wealthy parents secure the admission of their children to elite universities through cheating and bribery. The sentence imposed on former college admissions consultant William "Rick" Singer by U.S. District Judge Rya Zobel in Boston marked the longest issued to any of the dozens of people charged in the sprawling "Operation Varsity Blues" investigation.