“The most important thing you can do is make known to your representative and your senators your concern about the national investment in science and technology,” says presidential science advisor D. Allan Bromley, who is quoted in a new pamphlet, “Communicating with Congress,” published by the American Institute of Physics. Included are tips on writing to a member of Congress, suggesting a brief, one‐page letter with three paragraphs: the first stating the letter's purpose and the writer's credentials, the second elaborating on the issue of concern, and the third asking for action. “Responding to mail is crucial to reelection, and a great deal of congressional staff time is devoted to responding to letters from constituents,” the pamphlet says.