For non-union employers, presumably they will have the choice of what to do with cost savings.

Come into her plan, or keep what they have. Choice is back down. She has also stated she will back any and all improvement to ACA.

....is simply false, and if a law was passed dictating that (it won't) it'd be thrown out in a New York minute.

Plus, why should "companies with union negotiated health care plans would be required to enter into new contract negotiations" have to do that? Better yet, turning it around, why should unions who have won those negotiations have to renegotiate? They already HAVE their benefits, earned on the hard work and backs of the rank-and-file unions.

Maybe Senator Sanders should have worked in a union shop to understand how this works.

I have no idea why you think it would be "thrown out".

The Culinary Union has about 60,000 members. Its affiliated health center in Las Vegas provides many services free and has doctors, dentists, optometrists, a pharmacy and urgent care. Mr. Sanders, one union flier warns, would “End Culinary Healthcare” and “Require ‘Medicare For All.’” The flier explains that Pete Buttigieg, Amy Klobuchar and Joe Biden would “Protect Culinary Healthcare.”

Another flier doesn’t mention names: “We have fought for 85 years to protect our healthcare. Why would we let politicians take it away?” Some candidates might promise higher wages, but they “have never sat at our bargaining table or been on a 24/7, 6 years, 4 months, and 10 days strike line—like we have to make an employer pay for healthcare.”

This stance has brought blowback from embittered Bernie bros. “It’s disappointing,” a union official said Wednesday, “that Senator Sanders’ supporters have viciously attacked the Culinary Union and working families in Nevada simply because our union has provided facts on what certain healthcare proposals might do to take away the system of care we have built over 8 decades.” Randi Weingarten, the head of the American Federation of Teachers, tweeted support: “Isn’t it better to keep fighting 4 universal health care, than attack those who have concerns?”

Medicare for all will also be bad for seniors. Medicare for All would shunt everyone into a new single-payer program, which also means demolishing today’s Medicare. That includes doing away with private plans under Medicare Advantage, which enroll about 22 million people.

That is all.