How come that this 'evidence' wasn't made available to the UN weapons inspectors in November?

A valid question which only the US can answer I reckon. However I would assume that giving evidence early in the peace can jeopardise those who gathered the intelligence to begin with, or at least the means they used to gather it.

As for the US having nuclear weapons, well... Many countries do and havent been barred from keeping them as I said in my original post there is France. Then there is Russia, India, Pakistan, and I believe the UK and China possess nuclear weapons too. I quote Baroness Thatcher "Nuclear weapons are absolutely vital". These countries don't currently have an agenda to threaten other people though. Saddam does.