Connecticut's governor Dannel P. Malloy declared February 12, 2018, Charles Darwin Day in the state of Connecticut, citing the need to protect "the advancement of science and courageous free inquiry."

When Idaho's House Education Committee held hearings on a new set of proposed science standards on February 1 and 2, 2018, it was expected to make a recommendation. But despite hearing from twenty-eight testifiers, all in favor of adoption, the committee failed to recommend approval of the standards. And several members of the committee objected to passages involving climate change and evolution.