Dennis Kucinich isn't a socialist and doesn't claim to be one, but his position on Libya is more sensible and also more in keeping with socialist activism than the kind of argument we have heard, and are still hearing sometimes, from all too many US and other socialists about the Libyan debacle ("revolution" in their lingo). The way the US government went to war against Libya was undemocratic and is now illegal too, and that's the point that Kucinich is focusing on, unlike those socialists who think that democracy begins with uncritical support for other people's rebellions far from home, regardless of the political character of their leadership.
Kucinich's resolution got voted down 148-265. It's noteworthy, though, that more Republicans (87) than Democrats (61) voted for his resolution, too, not just John Boehner's counter-resolution (presented to weaken support for Kucinich's) which only criticized the POTUS without committing the USG to withdrawing troops from the Libya war.
It all says a lot about the state of the left-of-center side of US politics, from Trotskyists to Democrats.