Everyone except the most safe, most partisan, and least ambitious are refusing to go out on a limb. They have seen the intel reports, and they know that something will come out eventually, and that it will be significant. THis is just a lot of noise, some democrats at Eurocentrists trying to make some buzz. I think that they are trying to undercut confidence of Americans in the President hoping that distrust will continue even if the evidence comes out on the President's side. The goal appears to be an environment of 'prove it' when the President speaks.