There are so many people who under report taxes. Many contractors and tradesmen get paid under the table. Executives use creative accounting to hide money. Illegals don't pay income, state, SS or local taxes. A national sales tax would make sure that everyone pays.
Nationalized healthcare is perplexing. I find it hard to believe the majority of docs favor it, though I read your study summary. Besides longer wait times, there will be more regulation which will put most private docs out of business. The transfer to electronic medical records can cost a large practice up to 200,000 for a group. Then there are yearly charges to maintain the system and protect the records. Also, there will be rationing of medical services, which is concerning.
Lawyers in this country are out of hand. The cost of medical care in this country is significantly increased by med professionals having to practice defensive medicine, which always increases costs. Malpractice is very high and there is no incentive for lawyers not to take crappy cases. Lawyers shouldn't be paid a % of damages awarded because they inflate damage #s to get paid more. There also needs to be some kind of review before a case goes to court, where an arbitrator or single medically knowledgeable judge pre-screens the case and throws out the ones that are bogus. Docs have to report any lawsuit brought against them regardless of guilt and malpractice goes up. How f'ed up is that? Many physicians left the field in the last 8-10 yrs because of the rising costs and excessive litigaton. This contributes to the shortage of doctors. And despite the historical impression that docs get paid a lot, the average general doctor makes $140,000 per year. Thats after 12-15 yrs of schooling and debt post HS.
Overall, I don't feel nationalized healthcare is completely bad, it really depends on how it is done.