incorporators". During the last hours of the session, when the Senate was immersed in the rush of last minute business before its adjournment, Senator Wilson introduced the bill. Without examining it or debating its provisions, both the Senate and House approved it, and President Lincoln signed it. Although hailed as a great step forward in government recognition of the role of science in American society, at the time, the National Academy of Sciences created enormous ill-feelings among scientists, whether or not they were named as incorporators. The act states:[T]he Academy shall, whenever called upon by any department of the Government, investigate, examine, experiment, and report upon any subject of science or art, the actual expense of such investigations, examinations, experiments, and reports to be paid from appropriations which may be made for the purpose, but the Academy shall receive no compensation whatever for any services to the Government of the United States.The National Academies did not solve the problems facing a nation in Civil War as the Lazzaroni had hoped, nor did it centralize American scientific efforts. However, election to the National Academy did come to be considered "the pinnacle of scientific achievement for Americans" until the establishment of the Nobel Prize at the end of the 19th century. In 1870, the congressional charter was amended to remove the limitation on the number of members. In 2013, astrophysicist Neil deGrasse Tyson was asked to write a speech for the 150th anniversary of the Gettysburg Address in which he made the point that one of Lincoln's greatest legacies was establishing the National Academy of Sciences in that same year, which had the long-term effect of "setting our Nation on a course of scientifically enlightened governance, without which we all may perish from this Earth". Presidents The president is the head of the Academy, elected by a majority vote of the membership to serve in this position for a term to be determined by the governing Council, not to exceed six years, and may be re-elected for a second term. The Academy has had 22 presidents since its foundation. The current president is geophysicist Marcia K. McNutt, the first woman to hold this position. Her term expires on June 30, 2022. 1863–1867 Alexander Dallas Bache 1868–1878 Joseph Henry 1879–1882 William Barton Rogers 1883–1895 Othniel Charles Marsh 1895–1900 Wolcott Gibbs 1901–1907 Alexander Agassiz 1907–1913 Ira Remsen 1913–1917 William Henry Welch 1917–1923 Charles Doolittle