Bush delivers remarks congratulating the University of Michigan Wolverines over the team's victory in the NCAA Basketball Championship in the Rose Garden during the morning. President Bush announces the nomination of Richard H. Truly for Administrator and Deputy Administrator of NASA in the Roosevelt Room during the afternoon. President Bush announces the nomination of James R. Thompson, Jr. for Deputy Administrator of the National Aeronautics and Space Administration. April 17 – President Bush delivers an address at Hamtramck City Hall in Hamtramck, Michigan during the morning. April 18 – President Bush attends he National Conference of the Building and Construction Trades Department of the AFL – CIO in the International Ballroom at the Washington Hilton Hotel during the morning. In the afternoon, President Bush speaks during the Farm Radio Broadcast in answering questions on the subjects of agriculture budget and exports, drought relief, and Agriculture Secretary Yeutter. Invoking his predecessor Franklin D. Roosevelt, President Bush signs legislation implementing the bipartisan accord on Central America in the Rose Garden during the afternoon. President Bush transmits "five revised deferrals of budget authority now totaling 9,663,811" in a message to Congress. April 19 – President Bush announces the nomination of Morton Isaac Abramowitz for Ambassador Extraordinary and Plenipotentiary of the United States of America to Turkey. April 20 – President Bush delivers remarks congratulating the University of Tennessee Lady Volunteers over their victory in the NCAA Basketball Championship during the morning. President Bush and Vice President Quayle deliver remarks in the Vice President's office in the Old Executive Office Building prior to President Bush signing the legislation establishing the National Space Council during the afternoon. President Bush announces the nomination of D. Allan Bromley for Director of the Office of Science and Technology Policy. April 21 – President Bush signs a proclamation declaring the upcoming May 1 as "Law Day, 1989" during a morning appearance in the Roosevelt Room. President Bush designates James J. Carey for Acting Chairman of the Federal Maritime Commission. April 24 – President Bush attends a memorial service for the victims of the USS Iowa turret explosion in Hangar LP – 2 at the Norfolk Naval Air Station in Norfolk, Virginia during the morning. President Bush attends a luncheon of the Associated Press Business in the Grand Ballroom at the Hyatt Regency Hotel in Chicago during the afternoon. President Bush attends the dedication ceremony for the Centennial Grove in