Opinion: Take it from me, tweaks won't fix health care. Democrats should focus on Medicare for All.

Democrats have secured a 40-seat flip of the House of Representatives, based largely on a nationwide call for health care reform. Many Democrats, led by Brian Higgins of New York, are planning to use their newfound control of the House to work on a Medicare buy-in bill. I spent 20 years as a health insurance executive before leaving my job as a vice president at Cigna.