A Washington watchdog group says it has identified a second official in the Obama administration whose family history includes an investigation by the federal government into communist activities. Judicial Watch posted a report Friday that said Jeh Johnson, the secretary of Homeland Security, confirmed in a recent news conference that his grandfather appeared before the House Un-American Activities Committee in the 1940s. Judicial Watch said the FBI previously disclosed that "the dad, maternal grandpa and father-in-law of President Obama's trusted senior adviser, Valerie Jarrett, were hardcore Communists under investigation by the U.S. government." Johnson's family history is relevant, Judicial Watch...