Keeping this to simple numbers...
Okay, this is what you meant by double counting in the sense of a 7.5% payroll tax assuming your payroll is greater than $2 million; I'm not sure I entirely agree with this assessment, keeping in mind that you're probably not allocating healthcare benefits (or at most allocating only partial, supplementary benefits) for those employees that opt in to SP, even assuming you do have a large enough payroll to be taxed in the first place. What I want to be clear about is that you're not getting hit with a tax bill for $100,000 per your example, so much as that you're getting virtually taxed on it in terms of losing the deduction for that labour expenditure, and getting potentially taxed at the payroll level.
What I meant by 'double counting' myself is more the idea of what seems to be an assumption in the white paper of there being a substantial premium spending base left to tax per the elimination of those deductions in the event SP is passed; I have my doubts, but again, I'd need to see the breakdown.
Suggest you Google up the British N.I.C.E.
Every SP system has to ration. Government resources aren't infinite, and they typically aren't effectively spent.
That's a cost imposed by SP, on top of immediate fiscal costs, just as insist access is a cost of our current system.
Yes, rationing exists in _every_ system: with SP you get rationing on the public end rather than on the private end; neither has unlimited funds for healthcare expenditure.
That said, the publicly spent dollars of virtually every SP system are allocated clearly and substantially more efficiently than the privately spent dollars of the US system, even if you assume the quality of care is compromised (which there isn't really any evidence in support of; if anything, evidence exists to the contrary vis a vis most SP/UHC systems outside of some forms of cancer care).
Yeah - as I said, I think this is more of a list of "things i think could be good ideas" than an integrated plan.
Well I can't pass any definitive judgments without seeing the numbers, but the essential conundrum is that the projected numbers seem especially high given that SP coverage and premium spending should be negatively correlated to a pretty high extent; needs a breakdown.
Their long term growth is lower, their overall unemployment is higher, their unfunded liability problems are generally even worse (relatively) than ours, and their standards of living are generally lower. No thanks

.
Long term growth over what time frame? WW2 and its impacts distorts anything over 40 years substantially and its effects continue beyond (kinda helps to be the sole superpower in the wake of a war where pretty much everyone was ravaged to varying extents except you).
From what I can see growth is pretty clustered amongst a subset of iconic, developed countries:
https://data.worldbank.org/indicato...cations=US-CA-DK-NL-NO-JP-DE-FR-GB&start=1961
The HDIs of many such developed countries is higher, especially after you adjust for inequality (i.e. you look at how the average person lives as opposed to an ultra-rich minority skewing the average).
Their democracies are more integral.
Their corruption tends to be lower.
Their freedom of the press tends to be higher.
Their net debt to GDP ratios are better with few exceptions per the IMF.
They live longer, and they're even happier.
They have better intergenerational economic mobility (with the notable exception of the UK).
Hell, quite a few are more economically free overall, and some even have better median incomes and purchasing power.
https://en.wikipedia.org/wiki/Democracy_Index
https://en.wikipedia.org/wiki/Corruption_Perceptions_Index
https://en.wikipedia.org/wiki/Press_Freedom_Index
https://en.wikipedia.org/wiki/List_of_countries_by_public_debt
https://en.wikipedia.org/wiki/List_of_countries_by_Human_Development_Index
https://en.wikipedia.org/wiki/List_of_countries_by_inequality-adjusted_HDI
https://en.wikipedia.org/wiki/Socio...nited_States#Comparisons_with_other_countries
https://en.wikipedia.org/wiki/Index_of_Economic_Freedom
https://en.wikipedia.org/wiki/World_Happiness_Report
Not bad places to live overall.
Also, anecdotally as a dual citizen, I generally prefer Canada to the States, I'll be honest (my living arrangements reflect this accordingly).