>Walmart is deciding that now, because most of the government controls on corporate power have been neutered and corporate tax rates have been reduced to almost nothing by loopholes and offshore entities.
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>If our corporate tax rates have been reduced to almost nothing, why is there so much corporate money outside the US that will not be brought back in because of our HIGH corporate tax rates? Just curious....

You've landed on one way the US government allows corporations- and wealthy individuals- to evade taxes.
They pay NO US tax at all by keeping it outside.
One dollar would be a HIGH tax rate under those conditions.