Washington D.C. - In an increasingly dynamic global economy, many American families are facing substantial new economic risks that are undermining their ability to save for their retirements or invest in their futures.  Unless action is taken to restore a sense of economic security and chance for prosperity to the middle class, the excessive risk shouldered by most American families will take its toll on economic growth. In its first hearing of the 110th Congress the Joint Economic Committee examined the impact of middle class economic insecurity on long-term economic growth.