By reducing the amount of wealth expropriated by the criminal sector (either by private criminals or by public criminals) and by increasing the amount of wealth that remains in the productive sector. Also important is that the Federal Reserve, the counterfeiting government agency which discourages savings and promotes wasteful immediate consumption, be abolished. Increased savings leads to increased capital which leads to increased wealth. However, with our current world low savings rate, we are going to be plummeting in the near future.
The best solution, of course, to the tax problem would be to abolish the IRS and replace it with nothing (not the revenue-neutral "Fair" Tax which would allow the government to continue stealing the same amount of money), which would mean that DC has to cut back to the level of big government we had 10 years ago.
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Ben 10 Games