On the lack of association between taxes, GDP and happiness

During a February 6, 2016 debate, U.S. presidential aspirant Donald Trump claimed that: “Right now we’re the highest taxed country in the world." Well, living in a country with much higher tax rates, I can tell you that his statement is patently false.^[Maybe he’s referring to the corporate tax rate which is quite high; but even that is irrelevant to the fact that all sorts of deductions and exclusions on the U.