The Capitol emptied out on Thursday, a full day before the midnight Friday deadline for funding the Department of Homeland Security. Lawmakers who were deadlocked over new restrictions on immigration officers jetted off to Munich for a security conference or headed home for a weeklong recess, seemingly unconcerned with the looming closure. It was a jarring change from the past, when lawmakers were reluctant to seem like they were giving up for even a moment before time ran out for a deal.