Terror and the Methodist Ladies Aid

Suddenly several suspicious packages seem to be floating around the world.  I don't want to trivialize the threat, but I heard on TV that authorities were profiling packages to help to identify any other threats.  Is that allowed?  Hasn't profiling, no matter how effective, no matter what the threat, been cast out of the law's toolbox?

Maybe they've thrown that limitation to the winds?  Maybe they'll no longer be watching members of the Methodist Ladies Aid in connection with terrorism originating in Yemen?

OofDah!  Maybe they acquired some sense??