Karen Mathis is president and chief executive officer of Big Brothers Big Sisters of America, the nation’s largest donor-based volunteer network of mentors for youth, a non-profit organization proven to help children of single, low-income and incarcerated parents beat the odds. She joined the top-rated network in September 2009, after completing a one-year assignment as executive director for the Central European and Eurasian Initiative (CEELI) Institute, a preeminent international non-profit provider of post graduate professional legal education in Prague.