Death and Taxes - Taxes

BHO whining that the worlds governments don't get enough of the worlds wealth:

“There is no doubt that the problem of global tax avoidance generally is a huge problem,” he told reporters at the White House on Tuesday. “The problem is that a lot of this stuff is legal, not illegal.”

SCOTUS in Gregory v Halvering

The legal right of a taxpayer to decrease the amount of what otherwise would be his [or her] taxes, or altogether avoid them, by means which the law permits, cannot be doubted.

Whose money is it then?