...Massachusetts' 'AA+' IDR reflects its considerable economic resources, strong budget controls and record of careful financial management. The commonwealth carries a long-term liability burden that is well above average for a U.S. state but remains a moderate burden on resources. The Stable Rating Outlook reflects the expectation that the commonwealth will continue to act as needed to ensure budget balance and maintain an adequate budgeted reserve position. Economic Resource Base: The commonwealth has a broad and diverse economy. Employment growth is solid, education levels are high and population growth has approximated that of the U.S. this decade. The commonwealth's economic fundamentals include significant strength in the healthcare, technology and education sectors, leaving it well positioned for solid gains going forward. Measured by per capita personal income, Massachusetts is the second wealthiest state in the nation....