Politics: Now that Donald Trump has focused on something he at least has some expertise in -- the economy -- he might be able to get his flagging campaign back on track. And give him credit: The ideas he outlined in Monday's economic speech are mostly excellent.

Trump's plan, unveiled appropriately enough in economically depressed Detroit, would go a long way to kick-starting the 3% plus economic growth that Americans used to consider a virtual birthright. Much of his program consists of powerful pro-growth, supply-side policies that have worked before -- and would work again, if given a chance.

They include:

Across the board income tax cuts, helping especially those with middle incomes;

Tax simplification, with a reduction in the number of tax brackets from seven to three -- 12%, 25% and 33%, and "For many American workers, their tax rate will be zero";

Tax cuts for businesses, which today face the highest rates -- nearly 40% -- in the industrial world. Trump would cut business taxes to 15% of income, a move that would almost instantly end "corporate inversions" -- companies relocating headquarters overseas -- and unlock as much as $2 trillion in corporate cash now held by companies abroad by taxing it at just 10% when it's returned from overseas.

Deduction of child care spending from taxes -- a move that will help many middle-income families and boost the U.S. labor force, which has seen 14 million people depart since President Obama took office.

A plan to reform education to help parents exercise their right to choose their child's school.

End the death tax. Today, taxes on estates often keep entrepreneurs and small business people from passing their businesses on to their survivors. Often in the case of farms and small businesses, the tax forces a sale of the assets merely to pay the taxes. It's a hateful tax that's both absurd and economically destructive.

A regulatory moratorium and, ultimately, a regulatory rollback to shrink the 80,000 pages now in the federal register and the $2 trillion in annual costs imposed on the economy by out-of-control regulation.

"Unleash the energy revolution" by lifting restrictions on "all sources of American energy," including the vast energy resources held by the federal government, to make the U.S. the world's No. 1 energy powerhouse. Trump cites as support estimates from the respected Institute for Energy Research that lifting the current restrictions would lead to a $100 billion a year increase in GDP, 500,000 new jobs a year, and a $30 billion hike in wages over the next 7 years.

Repeal ObamaCare and replace it with a market-friendly alternative that will let Americans choose their coverage.

"These reforms will offer the biggest tax revolution since the Reagan Tax Reform, which unleashed years of continued economic growth and job creation," Trump said Monday.

He wasn't kidding. Yes, there are some aspects of his plan we don't necessarily agree with -- including tariffs and trade restrictions imposed on foreign goods, which turn out to be little other than taxes on U.S. consumers and businesses, and raising tax rates on so-called "carried interest" that some Wall Street hedge firm partners receive.

Also, last September, in an earlier outline of his economic plan, Trump had a top income tax rate of 25%, but now it's at 33%. We prefer even flatter and lower tax rates than the ones Trump has. Even so, the new top rate is way below the current incentive-killing 39.6% top tax rate.

As we said, Trump's economic proposals are vastly superior to Hillary Clinton's divide-and-conquer, tax-the-rich policies, which would further hobble U.S. growth by imposing $1.3 trillion in new taxes and onerous new regulations on the economy -- leading to fewer jobs, lower incomes, bigger deficits and a less secure future for all Americans.

Trump political foes, including even some in the Republican Party, cite many reasons for not liking him or supporting him. Fair enough, no candidate is perfect. But Trump just took one big reason for supporting Clinton off the table. When it comes to the economy, it's now advantage Trump.