If congressional leaders leave for the Fourth of July recess without taking action, they will need to explain why $4-a-gallon gasoline is not enough incentive for them to act.

• 如果国会领导者在独立日休假前没有采取行动，它们将需要解释一下为什么每加仑4美元的汽油还不足够激励他们去行动。