The US Senate has rejected a House-approved funding bill for the Department of Homeland Security as the partial government shutdown continues to paralyze travel.Security wait times at major airports like Louis Armstrong in New Orleans have reached three hours because screeners are working without pay during spring break.This staffing crisis stems from a political stalemate over immigration reforms following a fatal shooting by federal agents in Minneapolis.Aviation officials advise passengers to arrive at least five hours before departures as lines at the
William P. Hobby Airport stretch into parking garages.