The GOP’s new tax bill, which passed Congress on Wednesday afternoon after one last vote in the House of Representatives and will be signed by President Donald Trump, is also a health care bill. The tax bill does at least as much (if not more) to upend Obamacare, or the Affordable Care Act, than even all of the Trump administration’s thousand cuts to the health law over the past year by repealing the individual mandate. Which raises the question: Just what is the Obamacare individual mandate? And what does its repeal mean for Americans?

. . .