Jewel,
The sane question stumpled me as well. I talked to my wife after reading this article, and she was also dumb-founded by this.
How are these people able to fool the mighty USCIS into their sham marriages? I mean, these people don't live together to start with, and they have a tracker who call the US spouse prior to the interviews to ensure they are on the same page with their immigrant spouse. My suspicion, some at the local DO USCIS was involve on this scheme, because how do you process so many sham marriages without smelling a dead rotten fish? USCIS will not say, because it would be an embarassment....
Unfortunately, people who have legitimate marriages are victimized by USCIS for foolish reasons. For example, imagine being asked what color underwear is your wife wearing?
Well... I was in the bathroom shaving when she got dressed, why the hell do you care about my lack of knowing what color her underwear is? Common.... those are ridiculous questions, but USCIS seems to have fell in love with those douche bag questions.
It seems as if people with legitimate marriages should be given free pass to their immigrant benefit, only if they prove that their marriages are bona fide.