Reason Morning Links: Porn, Coal, and Reality TV

• Barack Obama flip flops on signing statements.
• Forty-two senators urge the Justice Department to crack down on porn.
• The Ex-Im Bank approves a giant new coal subsidy.
• The Department of Homeland Security gets its own reality TV show.
• Do police need a warrant to track suspects with a GPS device?
• William Rusher, 1923-2011.

The latest from Reason.tv: "Ethan Nadelmann on the Future of Legalization."