You are right on the training camp one in that Hussein couldn't do anything about it and this supposedly linking Hussein to Al-Qaeda was extraordinarily shaky, but there are a number of people calling BS on claims that the trailers didn't hold toxins at one point in time.
The Iraqi's "bleached" the Hell out of them by the time the US had a chance to make a grab at them. Wonder why they would do that?
Testing done on the trailers came back inconclusive as they were scrubbed down so well. Also, why were there fermentation units on the trailers that were found? Hydrogen production (these trailers were supposedly used to fill hydrogen artillery baloons) has next to NOTHING to do with fermentation...
There were initially labeled as pesticide units for crops; convienenly that same equipment can serve as a dual-purpose toxin "shop".
I'll take the known testimony of a number of Iraqi defectors/informants claiming the "dual-use" scenario that WITNESSED how things were being used, thank you very much.