American Subcontractors Association of Kansas City promotes the rights and interests of subcontractors and suppliers by building strength in community through education, legislation, networking and professional growth. Our chapter is a member of the American Subcontractors Association. ASA is the largest and fastest growing trade association dedicated to the concerns of subcontractors. With more than 8,000 member companies and 69 chapters nationwide, ASA has become a strong voice within the construction industry.