Terrorists caused bomb blats in Spain in UK in Germany..
It impossible to avoid terrorism through vigilance... It can only be defeated with ideology.. Nobody has defeated with VIGILANCE..
You need to nab them before they can execute it.. For that the MINORITIES HAVE TO KEPT UNDER A WATCH.. In any country it's always Minorities who do the act of terrorim with the Exception of IRA in Ireland...
But How will Congress invest on the infrastructure of anti-terrorism if they depend on the votes of the minorities.. How can they authorized supervision on their voting constituents...