The Senate is holding a Kangaroo Court designed to smear Apple for not voluntarily coughing up more tax revenue than the company actually owes.

Here are four things you need to know.

Apple is fully complying with the tax law. There is no suggestion that Apple has done anything illegal. The company is being berated by politicians for simply obeying the law that politicians have enacted. What’s really happening, of course, is that the politicians are conducting a show trial in hopes of creating an environment more conducive to tax increases on multinational companies (this is in addition to the OECD effort to impose higher tax burdens on multinational firms).

It is better for Apple to retain its profits than it is for politicians to grab the money. If Harry Reid, Barack Obama, and the rest of the crowd in Washington are able to use this fake issue as an excuse to raise taxes, the only thing that changes is that the tax system becomes more onerous and politicians have more money to spend. Neither of those results are good for growth, particularly compared to the potential benefits of leaving the money in the productive sector of the economy.

Apple shouldn’t pay any tax to the IRS on any of its foreign-source income. A few years ago, Google was criticized for paying “only” 2.4 percent tax on its foreign-source income, but I explained that was 2.4 percentage points too high. Likewise, when Apple earns money overseas, that should not trigger any tax liability to the IRS since the income already is subject to all applicable foreign taxes (much as, say, Toyota pays tax to the IRS on its US-source income). Good tax policy is based on the common-sense notion of “territorial taxation,” which means governments only tax income and activity within their national borders. Unfortunately, the American tax system is partially based on the anti-competitive policy of “worldwide taxation,” which means the IRS gets to tax income that is earned – and already subject to tax – in other nations. Fortunately, we have a policy called “deferral,” which allows companies to postpone this second layer of tax.

If Apple is trying to characterize US-source income into foreign-source income, that’s because the US corporate tax system is anti-competitive. Multinational companies often are accused of “abusing” transfer-pricing rules on intra-company transactions to inappropriately turn US-source income into foreign-source income. To the extent this happens (and always with IRS approval), it is because the American corporate tax rate is now the highest in the developed world (and the second highest in the entire world), so companies naturally would prefer to reduce their tax burdens by declaring income elsewhere. So the only pro-growth solution is lowering the corporate tax rate.

It’s worth noting, by the way, that the Tax Foundation recently estimated that the revenue-maximizing corporate tax rate is 14 percent.

So if the anti-Apple lynch mob actually wants more revenue, they should learn a Laffer Curve lesson and slash the corporate tax rate.*

*I want to maximize growth, not maximize revenue.