As attention on Medicare for All continues to grow, the industries that would be most affected by the shift are determined to chill the fervor. A coalition of lobbying groups for insurers, hospitals, doctors and drug makers, as well as the US Chamber of Commerce, are ramping up efforts to highlight the downsides of Medicare-for-All-type proposals. They are launching ad campaigns, talking to lawmakers, conducting polls, utilizing social media and speaking out against the concept of a single-payer health care system.