In 2001 former Republican United States Senator Rick Santorum from Pennsylvania proposed an amendment, to the education funding bill which became known as the No Child Left Behind Act, which promoted the teaching of intelligent design while questioning the academic standing of evolution in U.S. public schools. The language of this amendment was crafted in part by the Discovery Institute's Center for Science and Culture, with Phillip E. Johnson, founding adviser of the Discovery Institute's Center for Science and Culture, and "father" of the intelligent design movement, assisting Santorum in phrasing the amendment. It portrayed evolution as generating "much continuing controversy" and being not widely accepted, using the Discovery Institute's Teach The Controversy method.
The Conferees recognize that a quality science education should prepare students to distinguish the data and testable theories of science from religious or philosophical claims that are made in the name of science. Where topics are taught that may generate controversy (such as biological evolution), the curriculum should help students to understand the full range of scientific views that exist, why such topics may generate controversy, and how scientific discoveries can profoundly affect society.
-- Final text of the Santorum Amendment as included in the Conference Report.
On June 14, 2001, the amendment was passed as part of the education funding bill by the Senate on a vote of 91-8. This was hailed as a major victory by proponents of intelligent design; for instance an email newsletter by the Discovery Institute contained the sentence "Undoubtedly this will change the face of the debate over the theories of evolution and intelligent design in America ... It also seems that the Darwinian monopoly on public science education, and perhaps the biological sciences in general, is ending."
Scientists and educators feared that by singling out biological evolution as very controversial, the amendment could create the impression that a substantial scientific controversy about evolution exists, leading to a lessening of academic rigor in science curricula. A coalition of 96 scientific and educational organizations signed a letter urging that the amendment be stricken from the final bill, which it was, but intelligent design supporters on the conference committee preserved it in the bill's legislative history.