Quoted:
this could be the single most dangerous thing to our freedoms that has ever happened.
View Quote
Or not.
It isn't so much a consolidation of agencies as it is an agency that exists to consolidate the INFORMATION that they gather. The whole problem with 9-11 was that together, the CIA, NSA, FBI, INS and other agencies had enough data to stop the hijackers, BUT they never shared it. It was filtered through their upper echelons, none of which knew the info from the other agencies either, and by the time it reached the president's desk it was disconnected and useless.
From what I understand, the DHD would be that agency that is given all pertinent information by all the different agencies and decides whether further investigation or action is warranted.
It doesn't really sound that threatening to me...but hopefully it will be threatening to the terrorists.