SAVE now has access to data from across the federal government, not just on immigrants but on citizens as well. Experts have warned that using disparate sources of data—all collected for different purposes–could lead to errors, including identifying US citizens as noncitizens. But as the Trump administration has sought to crack down on immigration, DHS has radically expanded the tool. Last April, WIRED reported that SAVE was querying data from the SSA, the Internal Revenue Service, and state voter data. “We're talking about a known error rate that will result—and already has resulted—in multiple people being kicked off the voter rolls, going into a critical election,” says John Davisson, director of litigation and senior counsel at EPIC, which is one of the plaintiffs in the case.