WASHINGTON — Members of Congress lined up near a fire pit on the South Lawn on Tuesday to eat Northwest-style salmon while others chomped down on Midwest-style hot dogs. It was all part of the White House's annual congressional picnic, and this year the event featured foods from regions across the country for a "Tastes of the States" theme. President Barack Obama, standing next to first lady Michelle Obama, told lawmakers he wanted to thank them for their "incredible devotion to the country, regardless of party." As part of the event, every member of Congress is invited, along with their...