SCIENCE! Did Teachers Union Input at CDC Cross a Line? “One detail not disclosed at the time: The AFT had a hand in crafting the guidelines. On May 1, The New York Post broke the news of emails between the union and the CDC, obtained by the conservative watchdog group Americans for Public Trust, showing that the CDC had consulted with the teachers union, and that two suggestions from the AFT had been incorporated, almost verbatim, into the final document.”