Top House and Senate Democrats said Thursday that Kristi Noem's departure as secretary of the Department of Homeland Security will not be enough for them to support funding for the agency.Why it matters: DHS has been shut down for nearly three weeks, with the White House and congressional Democrats offering little indication that they are close to a deal."A change in personnel is not sufficient, we need a change in policy," House Minority Leader Hakeem Jeffries (D-N.Y.) said at a press conferenc...