I get the point however we should not forget the 3000 that died on 9/11. Even more died from inhaled toxins. Others suffer a form of PTSD that is as powerful as death. Add the deaths after and before 9/11. Maybe sprinkle in some of the European and other country's Jihad deaths. Include the death from monstrosity's unleashed on the innocent everyday and the numbers multiply. 

We cant risk assisting in adding more weight to an already overburdened FBI. They dont have enough agents to watch the current terrorist cells (24/7) in every State in America. Get lucky one time with one weapon of mass destruction and we will see an event of unparalleled proportion on US soil.

Given a choice id ride with a drunk driver over someone carrying pipe bombs.  
Common sense dictates to do all we can to stop drunk driving and terrorism.