The U.S. Treasury Department must deploy more personnel to developing nations to disrupt the flow of funds to Islamic State militants and other global terrorist organizations, lawmakers and congressional witnesses said Tuesday. In a hearing, members of the House Task Force to Investigate Terrorism Financing and testifying former officials discussed informal plans to allocate additional resources to the department and grant it authority to appoint more attach?©s to U.S. embassies and consulates in countries struggling to fight financial crime. Significant constraints on the department's budget, a lack of commitment from potential host countries and a dearth of security in post-conflict...