Patients and providers argue that it can result in delays or denials in receiving needed care, while insurers counter that it helps reduce costs by limiting the use of low-value or unnecessary care.

The researchers think using a "Medicare for All" system to eliminate health insurance and health plans would cut the net effect to 11%.

The rule restricts investment advisors from working for public pension funds if they've donated to state and local officials.

More than 4 in 10 identified high insurance premium costs as the top problem, while more than one-third said high out-of-pocket-costs are the most pressing issue.