Sen. Russ Feingold plans a hearing in June about President Obama's plan to seek "prolonged detention" without trial for some of the Guantanamo detainees. In a letter to Obama, Feingold writes that while he appreciates Obama's "good faith desire to at least enact a statutory basis for such a regime, any system that permits the government to indefinitely detain individuals without charge or without a meaningful opportunity to have accusations against them adjudicated by an impartial arbiter violates basic American values and is likely unconstitutional."