Sen. Kamala Harris on Monday unveiled a plan to achieve universal coverage by growing Medicare with the help of private insurers, an effort that splits the difference with her chief Democratic presidential rivals and finally equips the California Democrat with her own signature health proposal ahead of this week’s debates.

Joe Biden’s new health-care plan is supposed to show his moderation, not that this is a virtue to progressives. Hence the back and forth this week between Mr. Biden and Bernie Sanders about single payer. But cut through the spin, and the only debate Democrats are having is whether to eliminate private health insurance in one blow or on the installment plan.

Joe Biden unveiled a robust plan to expand Obamacare by adding a public program that all Americans could choose, as the former vice president argued Monday that medical insurance can be made universally accessible without scrapping the nation’s current model of delivering healthcare.

President Trump on Monday pushed for greater price disclosure in health care, signing an executive order that could make thousands of hospitals expose more pricing information and require doctors, health clinics and others to tell patients about out-of-pocket costs upfront.

As President Trump prepares to kick off his bid for a second term this week, he is anxiously searching for a way to counter Democrats on health care, one of their central issues, even though many of his wary Republican allies would prefer he let it go for now.

Congressional interest in substantially increasing the number of people who have health insurance has grown in recent years. Some Members of Congress have proposed establishing a single-payer health care system to achieve universal health insurance coverage.