Relative to the world's other advance democracies, Americans get off easy on tax day. Of the 35 richest countries, the U.S. ranks 32nd in total tax burden.

We have the most expensive compliance system in the world. The IRS brags that they spend 35 cents for every $100 they collect. They're very efficient collectors. And the reason is they stick the real cost on you and me.

Starting in the '80s or so, after the United States sharply cut its rates, other countries decided they better do it too, and here's how you do it: you just wipe out the exemptions, the deductions, the credits, the depreciation allowances. And people complain, "Oh my God, it's terrible," but you give them much lower rates and you give them an easier form to file, and people accept that tradeoff.

It was an easy thing to tax for a young country. And then gradually we moved to property taxes, manufacturing taxes, and the income tax was the answer to a populist demand: Let's go after the rich guys. We got into World War I, and they raised the rates and started taxing the rich. Then we got into World War II, and that's when they taxed everybody, because they just needed more revenue.

We cut tax exemptions in 1986, it was the most admired tax reform in U.S. history. Congress and the president worked together then to eliminate scores of loopholes and exemptions and deductions; this made taxes much simpler, and allowed a major cut in tax rates.

In the United States, unlike any other advanced democracy, money really talks. Our Supreme Court has said that spending money on politicians is a form of free speech. No other court has said that.

I really like the idea of consumption tax, and most countries have a pretty serious consumption tax. It's called a value-added tax or a goods and services tax ... It's a sales tax. It doesn't tax labor, it doesn't tax savings or investment - it taxes consumption.