Try the basic business argument for it. Health coverage has become a massive cost center inside American business. Not only are the benefits expensive, but you have to hire armies of benefits admins just to sort through the whole mess. It eats up a ridiculous amount of time and effort that could be going to the things that make you money. Also, people get so worked up over insufficient coverage and a system no one understands that it makes them less productive.
On top of that, if everyone just had health coverage no matter what, it would be a lot easier to attract talent, and it would encourage more entrepreneurship. Our current system stifles the ability of businesses to grow and pursue new opportunities.
Honestly, I’ve never understood why the business-wing on the right thinks putting employers on the hook for health benefits is a good idea. Seems like the sort of unfunded mandate on the private sector they should hate.
People: It’s money. And time, and personnel, which is money.
Everyone needs money. That’s why they call it money.