If we had access, if Keystone XL actually went ahead and there was a physical arbitrage to the Gulf of Mexico, we would expect that the price differential between WTI and Brent would dissipate, because once oil got down to the gulf coast, it would be Light Louisiana Sweet, which is Brent plus one dollar. So that differential would ultimately close, but you need to go that extra 450 miles from Cushing to the coast, and you need to be able to hook that up to Hardisty.
I'll point out that even if Keystone XL gets approved, we're talking 800,000 barrels plus or minus. You're going to need three Keystone XLs to hit the kind of production numbers that people are talking about in Alberta. Does that seem likely given what you've seen in the U.S. response to approving even one Keystone XL?