Government watchdogs at the Department of Veterans Affairs wrongly closed a years-long investigation into failures at a Wisconsin VA hospital and attempted to prevent a report about the probe from going public, the Senate Homeland Security Committee has concluded. The alleged cover-up was detailed in a report released Tuesday by the committee, which has looked into allegations of veteran mistreatment at the Tomah, Wis., VA hospital for the past 16 months. Committee investigators detailed a pattern of stonewalling and evasion from the VA's inspector general, which declined to provide documents and answer questions about aspects of the Tomah probe despite...