Aart,

I think you underestimate the number of people receiving gai who would not buy medical insurance.  Even if the number is low one is too many.  It would be simply cruel to deprive them of needed treatment if they had no coverage.

The taxation system favours the wealthy; Trump, Buffet, Romney and people like them pay lower taxes in proportion to their earnings than the rest.  Buffet is the only one speaking out on this issue.   Carried interest which allows hedge fund managers to pretend they have invested their own money in an enterprise and write it off is a prime and significant example.  

Non-profits, on the other hand, should receive tax breaks but they should be capped if the enterprise spends more than say 8% of their revenue on fund raising and overhead.  Perhaps churches should be exempted, but not faith based schools.

If I recall Trump is pushing for a flat tax of 15% and 25% which will simplify the tax code but put a further burden on the poor.