As we close up a week wherein Sen. Barack Obama, D-Illinois, on the stump and in a TV ad accused rival Sen. John McCain, R-Ariz., of being "in the pocket of big oil," and doing the industry's bidding -- not to mention a week during which the Democratic National Committee launched an Exxon-McCain '08 website to drive home this Democratic talking point -- the non-partisan Center for Responsive Politics points out that the issue is a bit more complicated than it first would appear. McCain has received three times more money from the oil industry in general -- $1.3 million...