Republicans in Congress unveiled a bill Thursday to rewrite the US tax code. The bill is facing an uphill struggle, as it threatens to eliminate some popular credits and deductions while handing large cuts to corporations.
Republicans say the plan will simplify taxes and strengthen the economy. Democrats argue it will hurt blue states, and favors the wealthy.
But if you really want to understand the tax bill, take a look at other countries — and history.
How other countries do it