Sen. Bernie Sanders’ presidential campaign has canceled all appearances and events until further notice following a procedure for an artery blockage. In a statement Wednesday, the senator’s adviser Jeff Weaver said Sanders “experienced some chest discomfort” during a Tuesday event. Testing found a “blockage in one artery,” and Sanders had two stents inserted, Weaver said. A guide to the Democratic contenders who want to face Trump “Sen. Sanders is conversing and in good spirits. He will be resting up over the next few days,” Weaver said. “We are canceling his events and appearances until further notice, and we will continue...