WARRINGTON, Pa — Seven Bucks County police departments will be looking for those who celebrate the wearing o’ the green a bit too much on Saturday. Pennsylvania State police will also be part of a sobriety checkpoint on Route 611 in Warrington between 10 p.m. Saturday night and 3 a.m. Sunday. Drivers in both directions will be stopped and “observed” for signs of impairment and enforcement of impaired driving laws. The exact location of the checkpoint was not disclosed.