On April 4, 2018, United States Citizenship and Immigration Service (USCIS) Director L. Francis Cissna wrote a letter to Senator Charles Grassley, Chairman of the Senate Judiciary Committee, to provide him with an update on measures USCIS is taking to improve the integrity of the nonimmigrant employment visa program following the April 18, 2017 “Buy American, Hire American” Executive Order.  Director Cissna indicated that changes have and will continue to be made in the form of regulations, policy memoranda, and operational changes.