What Trump wants to do is do health care like Auto Insurance, if you can get better health care from a company in Texas, and you live in Idaho, then you will be able to cross state lines, which you can not do now, so the insurance people have to compete with better prices on policies...
I have auto insurance in Wisconsin and I live in Utah...a lot cheaper there than it is here...
1) what about the people who still can't afford it, and make too much to qualify for Medicaid? According to Trump's quote in the link you proved, he's promised "universal coverage. So how does Trump ensure that those people who cannot afford coverage are covered?
2) will it be like car insurance in terms of people being required to buy it? Like...an individual mandate?? Or will people be allowed not to carry health insurance if they don't want to? And if that is the case, how can he fulfill his promise of "universal coverage?"
3) if you're really talking about making it like auto insurance...I don't think you actually understand the issues.
The reason health insurance policies are not sold across state lines is because each state has its own coverage requirements. So, a policy sold in one state generally won't meet the coverage requirements in another, so a different policy must be written.
But in fact, states also have their own coverage requirements for auto insurance, so that you may have to change your car insurance coverage when moving to a different state. You may be able to buy your car insurance from the same company, bit the policy details may change. Which is exactly how it is with health coverage right now.
But to be able to sell the exact same health insurance coverage over state lines, you'd have to eliminate the right of each state to mandate certain minimum coverages. That's not even the case with car insurance right now.