Our federal government spends roughly $3 TRILLION a year and the population is roughly 300 million, which works out to $10,000 per person per year. With a median family in the US earning around $50,000/year and having 3 members, it is clear that this family can't afford to pay its "fair share" of $30,000/year in taxes. Without a drastic slashing of the federal budget, we are forced into a progressive tax system, where by progressive I simply mean the wealthy pay more in taxes than the not so wealthy. Noone, including McCain, is seriously arguing that taxes should be assessed on a "per person" basis. But this doesn't mean wealth is being spread around, it just means those less wealthy are not paying their fair share of federal taxes.
John McCain knows full well that the country has always had a progressive tax code: i.e. spreading the wealth around. (For unto whomsoever much is given, of him shall be much required” according to the New Testament’s Book of St. Luke.)
What Obama is proposing goes much further. He wants to drastically expand the amount of money that the government takes from the rich and, rather than spend it, just writes checks and sends it to other citizens. We already have a little of this, for example the earned income tax credit. What Obama proposes is an enormous increase in this type of wealth transfer, through mutliple "refundable tax credits."
The quickest way to see this is to ask yourself what taxes Obama is planning to cut. He promises tax cuts for 95% of Americans but, if you look at his plan, there aren't any taxes he actually plans to cut. What tax rates will go down under the Obama plan? NONE! Instead he proposes multiple tax credits, which end up being checks for millions of Americans. He's not proposing to lower any of the income tax rates. He's not planning on lowering taxes on capital gains, dividends or corporate taxes. Instead he proposes multiple changes to the tax system which do nothing but redistribute wealth.