To turn an American phrase already well worn out: If doing something over and over again and expecting different results is the definition of insanity, all 30 million Republican voters Tuesday should be put in asylums.

Assuming Republicans win back the Senate and make gains in the House, we already know how this one is going to turn out. After a similar Republican victory in 1994, the Newt Gingrich-led Republicans used the lame duck session – when they still were a minority – to sell out the American people on the North American Free Trade Agreement. That way they kept the freshman class taking power in Congress in January from sabotaging a done crony capitalist deal of which the Rt. Rev. Jesse Jackson, right for once, proclaimed, “NAFTA is a shafta!”

Sold as “free trade,” NAFTA actually was managed trade – for Big Business, which could afford the paperwork, and against small-business, which couldn’t. That’s why real free-trader Murray Rothbard opposed it. NAFTA was 900 pages. With 200 countries in the world now, true free trade deal could be done on 2 pages, simply listing the reduced or eliminated tariffs for each land.

Giving the president unlimited negotiating authority also is unconstitutional because Congress cannot give away its powers. The Constitution is clear, “The Congress shall have the Power To lay and collect Taxes, Duties, Imposts and Excises….” The power doesn’t just mean a single up-or-down vote, but the power to change anything the president negotiates, something these trade scams deny.

On FoxNews on Sunday, Mitt Romney promised the Republican victory would advance a new unconstitutional trade deal:

“Harry Reid won’t give him [Obama] that authority. Republicans want him to have that authority. We want to see trade negotiations under way and see if we can’t find more places to sell American goods. That will help the economy. The president will sign that.”

Why aren’t Republicans campaigning on the slogan, “Elect us, and we’ll give Obama even more power than the Democrats have!”?

Immigration

An immigration amnesty sellout also is inevitable. I’m not predicting it, but Obama’s expected Executive Action legalization of millions of the estimated 11 million illegal immigrants after the election might be just a ploy to bargain with the Republicans, either during the lame-duck session or in January. They could agree to an amnesty of, say, 3 million illegals.

Then Republicans could say to their voters, “See, we stopped Obama from making legal 8 million illegals.” But as happened after Reagan’s 1986 IRCA amnesty of 3 million illegals, the number would encourage many millions more to come here.

Romney again was invaluable on FoxNews:

“But you’re going to see a provision first of all to secure the border, second of all, to deal with those who have come here illegally and, third, to make sure our immigration policies are open and transparent to many people who do want to come here illegally. That’s going to happen. You’re going to be a bill actually reached the desk of the president, if we finally have someone besides Harry Reid sitting in the Senate.

“So, we’re going to get it done.”

Yep, he really did say, “are open and transparent to many people who do want to come here illegally.” I listened to the video several times. Listen to it yourself, starting at about 6:00. Who knew Freud with his slip was a Republican?

War

Some libertarians and paleoconservatives are hopeful GOP control of both houses of Congress will bring to the fore such opponents of hyperintervention as Sen. Rand Paul and Rep. Justin Amash. But those politicians are back-benchers.

The leaders of a GOP Congress all will be the interventionists: In the Senate, that will be John McCain and his two amnesty-’n’-war sidekicks, Lindsey Graham and Marco Rubio. The latter two are running for president and will try to out-McCain one another. Canadian Ted Cruz also is eager to prove his warmongering bona fides. McCain is in line to become the chairman of the Armed Services Committee.

Both House Speaker John Boehner and expected Senate Majority Leader Mitch McConnell also are hawks, obsessed with rewarding their paymasters in the military-industrial-congressional complex (Ike’s original name for it).

The hawks’ main aim will be bombing Iran. They’ll also be pushing for more sanctions to confront Russia over the puppet U.S. regime in Kiev; more “boots on the ground” in Iraq, again, to fight ISIS; and ousting Assad in Syria, even if that helps ISIS.

After the double debacles of the Iraq and Afghan wars they promoted, all these warmongers should have retired to wear hair shirts in hermitages. But now they’re going to be back spreading more death and destruction.

So the Republican sellout is guaranteed.

Well, as they say in Chicago, Vote early and often.