Eccentric Congressman Dennis Kucinich seems to be consistent, at least. Leading the charge of progressives opposed to intervention in Libya, Kucinich went one step further, claiming, Raw Story reports, that Obama's decision "would appear on its face to be an impeachable offense" because the president failed to secure congressional authorization.
Kucinich came to national prominence for his vociferous calls for the impeachment of both George W. Bush and Dick Cheney a few years ago over the Iraq war. Some are arguing that liberals should be equally if not more critical of Obama's intervening ways. "If Progressives are loyal to principal, then shouldn’t they be getting behind articles of impeachment?" Wonders archiebird at progressive hub Firedoglake.
From the perspective of one conservative, however--Howard Portnoy at Hot Air--Kucinich isn't being all that consistent, and liberal attention to the constitution may be a bit too late. A "constant theme" of the Obama presidency, he argues, has been "abiding disdain for the Constitution" when it comes to, for example, the Second Amendment. Why get all worked up only now about Congress's role in declaring war?
It's also worth noting that Kucinich's and other liberals' stab at consistency has, unusually, temporarily put them in the same camp as people way on the other side of the political spectrum: libertarian and Tea Party-aligned Republicans, who are similarly exercised over the issue of Congress's role. "When there is no imminent threat to our country, he cannot launch strikes without authorization from the American people, through our elected Representatives in Congress," said Republican Representative Justin Amash as reported by Dave Weigel. "We’re involved in two wars right now, and I don’t think we really need to be involved in a third war," he quotes Tea Party figure Senator Rand Paul.
Compare those to the comments from an unnamed Democratic lawmaker in Politico: "They consulted the Arab League. They consulted the United Nations. They did not consult the United States Congress."