Proponents of the Affordable Care Act  made several promises before and since the law passed. The most notorious of these was President Barack Obama’s assurance that people could keep their insurance plan if they liked it. However, other important promises were made that have garnered less media coverage, including how many people would enroll for coverage in the new health insurance exchanges, the law’s effect on health insurance premiums, the amount of choice and competition in health insurance markets, and the law’s impact on overall costs and the deficit. These promises arguably helped ensure some of the votes necessary for the controversial legislation to pass Congress.

. . .