Liberal U.S. Senator Sanders to challenge Clinton in 2016 race

By Emily Stephenson WASHINGTON (Reuters) - U.S. Senator Bernie Sanders, an independent from Vermont, launched a long-shot bid for the 2016 Democratic presidential nomination on Thursday, a move likely to pressure Hillary Clinton from the left on issues from income inequality to corporate governance. "How do we create an economy that works for all of our people, rather than a small number of billionaires?" The 73-year-old, second-term senator faces long odds against the fund-raising mig