ECCMA is the ANSI accredited administrator of the US technical advisers group (US TAG) to ISO TC 184/SC4 see http://publicaa.ansi.org/sites/apdl/Documents/Standards%20Activities/International%20Standardization/ISO/US%20TAGs%20to%20ISO/ISOTAG-Jan09.pdf
ECCMA is a Type A Liaison organization to ISO see http://www.iso.org/iso/about/organizations_in_liaison/organizations_in_liaison_details.htm?id=353898