All these credits are misdirection, they don’t change anything. foreign profits go through 5 layers of taxes and you yourself admit takes at least 50% in taxes. Even for a poor retiree holding Apple stock.
Apple pays 8% income tax to foreign governments. The credit means it still has to pay US taxes on the 92% that’s left. It would be CRAZY to tax money already lost to taxes.
Returning foreign profits would have worked out this way before repatriation.
Apple pays 8% to foreign governments and repatriates 92% that’s left.
Apple pays 9% to state of california. 84% is left.
Apple pays 35% to Federal government, 55% is left.
Apple pays the 55% as dividends to shareholders.
CA middle class taxpayer pays 9% to state of CA. 50% is left.
CA middle class taxpayer pays 20% federal dividend rate, 40% is left.
You understand now why Apple didn’t repatriate?
Taxing investment at 60% is an egregious rate, and it’s bad for society. The best tax rate for investing for society is zero, to encourage investing.
Change the corporate rate to zero, and compensate by taxing dividends at ordinary income rates. Besides encouraging more investment (and raising the same or more tax over time) you restore progressivity to our tax system.