Ever since the TSA moved the extra screening from the gate to the security lines, I almost always get flagged for extra screening in cities where US is small. Apparently, the TSA agents were told the *S in our CHAIRMAN*S PREF label means we need extra security. I have many boarding passes where the TSA agent circled this and forced me into a special line. This happens 100 PERCENT of the time in SEA. I e-mailed US today to ask them to change the label to read just CHAIRMANS PREF.