Of course it's open to debate, but I'm convinced there are unofficial quotas, though naturally no university will admit it. An interesting quote from a NY Times op-ed: "The Princeton sociologist Thomas Espenshade wrote in his 2009 book, No Longer Separate, Not Yet Equal: Race and Class in Elite College Admission and Campus Life, that 'to receive equal consideration by elite colleges, Asian Americans must outperform Whites by 140 points, Hispanics by 280 points, Blacks by 450 points in SAT (Total 1600).'

http://www.nytimes.com/roomfordebate/2012/12/19/fears-of-an-...