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(From left) Sen. Russell Feingold (D-WI), Rep. Barbara Lee (D-CA) and Rep. Jim McGovern (D-MA) take part in a news conference on Capitol Hill on Tuesday to discuss President Obama's decision to send more troops to Afghanistan.
Pablo Martinez Monsivais/AP
President Lyndon Johnson signs the Tonkin resolution, which gave him power to escalate the Vietnam war. It was easily passed by both houses of Congress, although it was later repealed.