Susan Collins picked an interesting week to defend an agency's honor. On Tuesday, a day after an ICE officer shot Joan Sebastian Guerrero through his windshield in Biddeford, Maine, in front of his three-year-old daughter, the senator told reporters ICE could improve but deserved defending against its harshest opponents. Guerrero wasn't the target of the operation, and he was driving to work when the agent fired. He lived in the country legally. "There's no doubt that ICE nee