The Washington State officials who looked at possibilities would like to end up close to rapid transit. The southernmost point of rapid transit is the extension of the SkyTrain lane out to Surrey. Some of those stations cross old railway alignments and rights of way. In a very preliminary way, they have considered the possibility of stopping short of Vancouver and going to Surrey, because there would be rapid transit there. Of course, Vancouver would be disappointed, but it would be an overall improvement for the region.
On June 9th, 2009. See this statement in context.