WASHINGTON — Airline passengers are experiencing some of the highest security wait times in the 25-year-history of the Transportation Security Administration — with some taking more than four-and-a-half hours to make it through checkpoints, a top official told Congress Wednesday. TSA acting administrator Ha Nguyen McNeill testified to the House Homeland Security Committee that her beleaguered agency is “being forced to consolidate” and “may have to close smaller airports if we do not have enough officers.” “It is a fluid, challenging and unpredictable situation. We understand this is frustrating and disruptive,” she added. “This is unacceptable.” More than 480 Transportation...