With this being the end of summer and Congress still on recess, maybe James Taranto was stuck for a topic when he used his Wall Street Journal column to float Dick Cheney's name as a possible Republican candidate to challenge Barack Obama in 2012. Dick Cheney? Take a breath. However unlikely that prospect might seem today, Taranto presents at least one - maybe the single - scenario where a Cheney candidacy might resonate with enough voters to give him a shot at winning the White House. "If the Bush administration's policies really did keep us safe for 7½ years, then...