II 115th CONGRESS 2d Session S. 2759 IN THE SENATE OF THE UNITED STATES April 25, 2018 Mr. Grassley (for himself, Mr. Rubio , Mr. Nelson , and Mr. Hatch ) introduced the following bill; which was read twice and referred to the Committee on the Judiciary A BILL To amend title 18, United States Code, to reauthorize and expand the National Threat Assessment Center of the Department of Homeland Security.