The problem will be out this weekend.  In the interim, if you want to get started, I suggest you read some or all of the following to get background on the issues.

Issue 1:

Ali Rodriguez, Detaching Dual Sovereignty from the Sixth Amendment: Use of the Blockburger Offense Test Does Not Incorporate Double Jeopardy Doctrines, 33 New Eng. J. on Crim. & Civ. Confinement 213 (2007)

Charles Morrison, The Supreme Court May Have Meant What it Said, But it Needs to Say More: A Comment on the Circuit Split Regarding the Application of the Dual Sovereignty Doctrine to the Sixth Amendment, 39 U. Toledo L. Rev. 153 (2007)

Issue 2:

Ilya Beylin, Booker's Unnoticed Victim: The Importance of Providing Notice Prior to Sua Sponte Non-Guidelines Sentences, 74 U. Chicago L. Rev. 961 (2007)