Congress divided on energy plan

As millions of people approach the summer vacation season under the threat of $4-per-gallon gasoline, Congress is scrambling to respond. But don't wait for anything that will drive down prices at the pump.

A Senate vote on a GOP plan is scheduled for Tuesday, and Senate Majority Leader Harry Reid has promised to bring up a Democratic package before the Memorial Day congressional recess. Except for halting the flow of oil into the government's Strategic Petroleum Reserve, neither plan is likely to go very far. Both will be challenged by filibusters by opponents, meaning they would require 60 votes to advance.

Here is a rundown:

THE DEMOCRATIC PROPOSALS.

— Enact a windfall profits tax on oil companies.