As to Bush lying, we don't know the actual state of his knowledge because there is simply no evidence to support the idea that this is a giant conspiracy to spare the family's connection with the Saudi's. Let's wait and see what this new evidence brings in.
As to lying about Islam being a religion of peace etc. I think we should remind ourselves that 1.6 billion souls on earth are Muslim and it was no doubt a calculated position of the Bush administration, as it is the position of the Obama administration although perhaps for different less noble motives, that a distinction must be made between terrorists and the Muslim faith. So Bush declared war on terrorism instead of a war on militant Islam. I thought at the time it was fastidious and would not have much effect. But it was not a stupid approach, at least in the beginning of our reaction to 9/11.
The question remains whether Donald Trump's big mouth has converted more of the 1.6 billion potential Muslim terrorists into terrorists. We have no way of knowing. We have no way of knowing whether rallying the homefront against Muslims in general (as Trump undeniably has done although he professes to the contrary) works on balance to our advantage by waking the country up and perhaps making is more wary of permitting any Muslims to intrude the homeland.
But to call these things lies when one is stating an opinion rather than advancing a fact is wrong. Trump advanced false statements of fact.
and so have you and I.
based on what we thought to be facts at that time.