User blog comment:Harold Burned-Mane/The Truth about Ulfric Stormcloak/@comment-1600847-20130911183702/@comment-1600847-20130911184751

And if you speak to the Argonians in the Assemblage, they tell you they don't want to be there. Citizens of Windhelm will tell you that Ulfric issued a decree that forbids Argonians from living inside the city walls. So it's either they live in the Assemblage, or they can't live in Windhelm.

We can discuss why Ulfric issued such a decree, but the fact remains he forbids Argonians from living inside the city walls.