“The inspector general for the Department of Homeland Security said the agency’s leaders had ‘systematically obstructed’ its work, including in a federal criminal investigation,” the Wall Street Journal reports.“In the letter to lawmakers dated Monday, the inspector general outlines 11 instances that he says the department had blocked his office from accessing records and information it needed to pursue its inquiries. He said DHS’s refusal to cooperate in the criminal investigation, which he said had national security implications, was ‘particularly egregious.'”