“Warning letters in hand, Zach Rybarczyk patrolled the food court at Union Station, looking for offenders. Past Auntie Anne’s, past Johnny Rockets. At Lotus Express, a Chinese food joint, Rybarczyk peeled the wrapper from a red straw and bent the end — the telltale giveaway. Plastic.” WaPo: On patrol with the enforcer of D.C.’s plastic-straw ban.