Some of the nation's leading defense lawyers have been trying to wrap their heads around what they consider abnormal behavior by the U.S. Department of Justice over the past year. Now, they're debuting a tool to help track criminal cases that appear to involve irregular charging practices, including aggressive legal theories and possible political retribution against President Trump's foes. "We created the Case Tracker because you cannot defend against an enemy you cannot see," said Steven Salky, a lawyer in the Washington, D.C., area who oversees the project. "The Tracker is intended to spotlight for the next several years the unusual cases being prosecuted by the Department of Justice."