This was an example of knee jerk law enforcement, not effective law enforcement. Such shotgunning is a classic waste of limited investigative resources - which makes the case move slower, not faster.
National origin is just another form of racial profiling. If law enforcement had a credible tip to look out for a Saudi national, they might question some. There was no such tip, and tearing this persons apartment apart and terrorizing his roommate for 5 hours went a little beyond that.
Investigators have plenty of evidence to wade through right now. Misguided crap like this only delays the process. It may be who we are, but its not who we should be.
The details of the incident so far indicates a small group or loan wolf, and probably a domestic one, according to law enforcement. It's early, of course, but I'm going to take their lead on that rather than recycle the trainwreck that was our post 911 response.
Hey folks, Freedom isn't Free.