NBC anchor Brian Williams deserves kudos for, on one night at least, giving as high a priority to declining gas prices as he and the media gave when they were rising, but then he suggested a political motive. Williams led Wednesday's NBC Nightly News by acknowledging the plunging prices and his own newscast's inaccurate predictions: “If you have filled your tank lately, then you've noticed. After some dire predictions on this broadcast and elsewhere that prices were rocketing to $4 a gallon, gas prices are coming down” to an average of $2.50 per gallon. Reporter Anne Thompson attributed the fall...