Rovegate

According to an article published today by Newsweek, Karl Rove was the source behind the leak of CIA agent Valerie Plame's identity. It seems obvious to me that Rove must resign, and that Congress must conduct an investigation to determine what, if anything, President Bush and other administration officials knew about this incident and when they knew it. If President Bush knew beforehand about the leak, or if he knew afterward and deliberately concealed it, then he should be impeached.