PROVIDENCE, R.I. — With just over two weeks until Election Day, U.S. Sen. Sheldon Whitehouse and his Republican challenger, former Rhode Island Supreme Court Justice Robert Flanders, sparred Saturday night over single-payer health care, immigration and potential threats to Social Security and other safety-net programs during an hour-long debate at the University of Rhode Island.The debate between the two Ivy League-educated lawyers began on a friendly note, with Flanders [...]