Scientific Integrity Act This bill revises provisions regarding the release of scientific research results by federal agencies. Each agency that funds, conducts, or oversees scientific research must (1) adopt and enforce a scientific integrity policy that includes certain requirements, such as restricting scientific conclusions from being based on political considerations; and (2) submit such policy to the Office of Science and Technology Policy (OSTP) for approval. Agencies must make their policies public, submit them to Congress, and periodically update them with OSTP's approval. The Government Accountability Office shall review implementation of the policies. Each agency shall (1) appoint a Scientific Integrity Officer, (2) establish a process for dispute resolution consistent with the scientific integrity policy, and (3) establish a specified training program for current and new employees.