Reason Morning Links: Police Chiefs Want No Part of Immigration Enforcement, California May Issue IOUs, Congress Tours the World on Taxpayer Dime

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- Big city police chiefs say illegal immigrants' fear of discovery hampers law enforcement, urge Congress to separate local law enforcement from immigration enforcement.

- California Gov. Arnold Schwarzenegger says state may have to issue IOUs unless legislature can overcome budget impasse.

- Taxpayer-funded overseas trips for members of Congress have tripled since 2001, increased tenfold since 1995.

- Study finds that over time* ex-cons pose no greater risk of re-offending than the general population.

- ACLU contends federal government is using false confessions obtained by torture of a detainee to keep him at Guantanamo. He me may have been as young as 12 when he was captured by Afghan police.

(*Edit: "over time" added to better reflect the study's findings.)