Democrats Have a Unique Constitutional Duty to Check, Balance the President
http://www.thenation.com/blog/172790/democrats-have-unique-constitutional-duty-check-balance-president
When Lyndon Johnson was president, Senate Foreign Relations Committee chairman William Fulbright held his fellow Democrat to account with hearings that challenged Johnsons escalation of the undeclared war in Vietnam. It was the right thing to do.
When Richard Nixon maintained that war, he was challenged by fellow Republicans such as Charles Goodell in the Senate and Pete McCloskey in the House.
When Ronald Reagan was conducting a lawless dirty war in Central America, Republicans such as Lowell Weicker of Connecticut and Charles Mathias of Maryland raised objections to the policies and actions of their partys president.
When Bill Clinton steered the United States into the conflict in Yugoslavia, Senator Russ Feingold and Congressman Dennis Kucinich rejected partisanship to demand that the Democratic president respect the constitutional requirement that wars be declared.