Bombing Suspect- a Threat not on the No-Fly List

It is a big story lately that there was an attempted plane bombing on Christmas day in the United States. What's very interesting to me is that this boy wasn't an uneducated person whose life was dedicated to religion completely, he graduated high school and even entered business school.
Another thing that is very interesting is the fact that this man wasn't on the "no-fly" list, even though his father told the U.S. embassy he might be a threat. However, seemingly harmless or innocent people are placed on that list all of the time. Perhaps the United States department of Homeland security needs to get their priorities straight, it could save lives.