The evidence against bin Ladin can't be released because it is classified. It would endanger the lives and positions of the intelligence people that have gathered it. It would endanger the countries in the Middle East that have offered it. To release the information to early would cut off ways of obtaining any info in the future. It would give the Taliban clues as to how info is obtained. That would be stupid. The proof will be offered when everything is in place to make a move. There is NO way it could have gotten this far if there wasn't overwhelming proof and the government wasn't 100% sure. The evidence has been shared with Great Britain, Germany and France so far.