“adcoms aren’t naive.”
They are not naive but sometimes they overlook.
The Adam Wheeler case is a vivid example.
http://www.thebaffler.com/salvos/adam-wheeler-went-to-harvard
http://www.thecrimson.com/article/2010/12/16/harvard-wheeler-college-guilty/
And sometimes the colleges don’t know that their admission officers are liars.
MIT is still in pain with the Marilee Jones case.