On September 4, immigration judge Denise Slavin followed orders from the Department of Justice to drop everything and travel to the U.S.-Mexico border. She would be leaving behind an overwhelming docket in Baltimore, but she was needed at “ground zero,” as Attorney General Jeff Sessions called it—the “sliver of land” where Americans take a stand against machete-wielding, poison-smuggling criminal gangs and drug cartels.As part of a new Trump administration program to send justices on short-term missions to the border to speed up deportations and, Sessions pledged, reduce “significant backlogs in our immigration courts,” Slavin was to spend two weeks at New Mexico’s Otero County Processing Center.But when Slavin arrived at Otero, she found her caseload was nearly half empty.