President Obama’s chief of staff reassured frustrated House Democrats on Tuesday that the White House will respond aggressively to the controversy at the Veterans Affairs Department. The VA has been under fire this month following reports that its healthcare facilities used secret waiting lists to disguise the number of veterans not treated within the agency's stated goal of 14 days. Dozens of veterans have reportedly died awaiting care. “I think you're going to find very aggressive action within the administration,” Rep. Xavier Becerra (Calif.), head of the House Democratic Caucus, said after House Democrats met with White House chief of...