Yes, we must also block the permit for Keystone’s northern leg, which would allow even more toxic tar sands to flow across America, but no one is going to buy that as a victory if TransCanada succeeds in getting their southern leg linchpin in place. If the climate movement fails to draw a line in the sand against Keystone XL in Texas and Oklahoma — and this tar sands nightmare is allowed to go online — we will all have flunked the climate test.