This is an interesting challenge.
Supreme Court to hear case that could change how voting districts are drawn - LA Times
The Supreme Court has agreed to consider a major shift in how political districts are drawn nationwide by counting only citizens who can vote, not the total population. If the justices eventually rule for the conservative group that appealed the issue, the decision could dilute the political power of Latinos, especially in large states such as Texas, California and Florida. The court said Tuesday it will hear the case in the fall and rule early next year.