This week, [John McCain] strayed perilously close to being indicted for the deadly sin of flip-flopping, which famously helped doom John Kerry's presidential bid in 2004. [His] excoriation of the Supreme Court [ruling that habeas corpus applies to Guantanamo detainees] seemed like overkill, given the limited nature of the judgment, and doubly odd given that Mr McCain supports the immediate closure of the prison camp and the transfer of its prisoners to the mainland. That would give them far greater protection than anything the court has done.