Sound Science Act of 2013 - Requires federal agencies, by January 1, 2014, to have in effect guidelines to ensure and maximize the quality, objectivity, utility, and integrity of the scientific information upon which the agencies rely. Prohibits any policy decision issued by an agency after January 1, 2014, from taking effect unless such agency has in effect guidelines for use of scientific information that have been approved by the Director of the White House Office of Science and Technology Policy.