(Portland, OR) -- The U-S Attorney for Oregon is joining ten other U-S Attorneys in a new multi-agency carjacking task force. Seven of the groups launched around the country building on existing task forces in Chicago, Washington D-C, Philadelphia and Tampa. Officials say the efforts are driving down carjacking rates in those cities because prosecutors, officers, federal agents and analysts are working together. Oregon's task force will be led by the U-S Attorney's Office, the FBI and ATF, with state and local partners.