Well, we're going to have to disagree. High and very progressive rates are the primary means of implementing socialist programs. California and Oregon, for example, are already wringing their governmental hands because in those states high income people pay most of the income taxes, and their officials are worried that a bear markets in equities might completely upend their budgets. In California, 48% of the income taxes are paid by the top 1%. 79% income taxes are paid by the top 10%. I've lived and worked in CA for the past 5 years, so I know more about than I'd like.
US defense spending may seem high, because we waste our money on obsolete weapons like aircraft carriers as jobs programs, but considering the threat from China it's too low, IMO. Unless US allies start stepping up, which I doubt will happen. Not that it matters that much. IMO, the next 50 years will be all about China and the US. No one else will matter, unless Iran or North Korea lobs a nuclear weapon.