Jackson Sumner & Associates (JSA) is an Excess and Specialty Lines MGA that began in 1981 in Boone, North Carolina. JSA offer ... s a wide range of products including property, casualty, automobile, garage and professional. JSA is committed to quality service for our agents and strong underwriting for our companies. The philosophy on which JSA was built in 1981, "We Are in Business Because of You" still guides everything we do today. Thank you for letting us be in business. read more