Good stuff. 🙂
Here is the article: The Supreme Court’s Treatment of Sovereigns as Amici Curiae, by Stephen R. McAllister.
An excerpt:
THE SUPREME COURT’S RULE on briefs of amici curiae does not treat all sovereigns the same. In particular, Indian Tribes and foreign nations are treated less generously than the United States, any State or territory, and even local governments. This article explores the origin of this disparate treatment and comments on its propriety.