Hmm. Last summer my firm quietly cancelled a conference/convention in Vancouver and ended up with it in San Diego - our direct budget was US$1.5m and that was money that could've gone into Vancouver. There was a bunch of political stuff going on at the time and the past PM...who was he?

....wasn't scoring points.
I've heard no such concerns around the office this year and I expect we'll be in Vancouver although I'm personally lobbying like hell for Victoria so I can stay at the house on Oak Bay.
Overall, I'd say the factors affecting US tourism into Canada right now are:
60% related to fuel costs - a lot of travel in the USA is down for the same reason.
38% related to the exchange rate - sorry, but we love the thrill we get when we buy something in Canada and hand over a US$20 and get CDN$25 back in change. That's just too cool to explain. It also offsets the GST (none of us really bother with the silly rebate forms) that we pay.
Now it is actually a tad more expensive to go to Canada than to just stay home.
2% of the issue is lingering ill-will from years of Bush bashing. That'll go away as folks realize there's been a change of management and your government officials are no longer calling our President a moron.
I know some here will get in a dither over this, but I would like to point out that all those "eeeeeevil" Republican capitialists down here are the ones who control the finances of the corporations who fund a chunk of US tourism into Canada.
So I can appreciate the advice to tone it down, but by this summer that'll be old news and the nasty ol' conservatives will be back to leaving their dollars in Canada again. It'll blow over soon enough, no worries.
