Yet even with all these steps, we cannot fully secure the border unless we take pressure off the border -- and that requires a temporary worker program. We should establish a legal and orderly path for foreign workers to enter our country to work on a temporary basis. As a result, they won't have to try to sneak in, and that will leave Border Agents free to chase down drug smugglers and criminals and terrorists. (Applause.) We'll enforce our immigration laws at the work site and give employers the tools to verify the legal status of their workers, so there's no excuse left for violating the law. (Applause.) We need to uphold the great tradition of the melting pot that welcomes and assimilates new arrivals. (Applause.) We need to resolve the status of the illegal immigrants who are already in our country without animosity and without amnesty. (Applause.) Convictions run deep in this Capitol when it comes to immigration. Let us have a serious, civil, and conclusive debate, so that you can pass, and I can sign, comprehensive immigration reform into law. (Applause.) Extending hope and opportunity depends on a stable supply of energy that keeps America's economy running and America's environment clean. For too long our nation has been dependent on foreign oil. And this dependence leaves us more vulnerable to hostile regimes, and to terrorists -- who could cause huge disruptions of oil shipments, and raise the price of oil, and do great harm to our economy. It's in our vital interest to diversify America's energy supply -- the way forward is through technology. We must continue changing the way America generates electric power, by even greater use of clean coal technology, solar and wind energy, and clean, safe nuclear power. (Applause.) We need to press on with battery research for plug-in and hybrid vehicles, and expand the use of clean diesel vehicles and biodiesel fuel. (Applause.) We must continue investing in new methods of producing ethanol -- (applause) -- using everything from wood chips to grasses, to agricultural wastes. We made a lot of progress, thanks to good policies here in Washington and the strong response of the market. And now even more dramatic advances are within reach. Tonight, I ask Congress to join me in pursuing a great goal. Let us build on the work we've done and reduce gasoline usage in the United States by 20 percent in the next 10 years. (Applause.) When we do that we will have cut our total imports by the equivalent of three-quarters of all the oil we now import from the Middle East. To reach this goal, we must increase the supply of alternative fuels, by setting a mandatory fuels standard to require 35 billion gallons of renewable and alternative fuels in 2017 -- and that is nearly five times the current target. (Applause.) At the same time, we need to reform and modernize fuel economy standards for cars the way we did for light trucks -- and conserve up to 8.5 billion more gallons of gasoline by 2017.