U.S. Technical Advisory Groups (TAGs) are committees accredited by the American National Standards Institute (ANSI) that determine the U.S. position on ISO draft international standards, draft technical reports, committee drafts, ISO questionnaires, draft reports of meeting, and any other related ISO document. CGA members participate on these U.S. TAGs by providing U.S. representation to ISO Committee meetings and by serving as head of delegation and members of delegations.