Worst Winter Mountain Pass?

At KREM2, Tim Lewis tweets: ” I’m glad I drove to Seattle (extended Easter weekend) after the shows last night (thanks Tom Sherry). Snoqualmie Pass is a mess today!” I’ve never driven over Snoqualmie Pass in the snow. But I’ve had some white knuckle times with Lookout Pass during winter. Which raises the question:

Question: Which mountain pass in the Inland Northwest scares you most in the winter? Why?