They need to find a smoking gun political enemy or non violent Bush haters that were spied on. Maybe lean on secret service or FBI - some agency that was charged with protecting the executive branch officers. Says in the papers that NSA shared the stuff they were mining. No Soros = No impeachment I say.
As I've said before, there are many posters like ZZZzzz (whose name is appropriate considering how often I doze when reading his threads) on many forums all over the internet. And each and every one of them possesses a case of tunnel vision so strong, hates Bush and company so intensely, that you will waste your life trying to get them to see anything other than the very utmost negative any issue regarding the US administration is concerned with. Might as well give up and let him spam. They'll all kill themselves in a few years anyway when Bush leaves office and they find they have nothing else to do in life, and their past rants added up to zilch and accomplished nothing.