A letter writer is correct that the national debt is $16 trillion, but $12 trillion is due to Reagan and the two Bushes.
Reagan increased the debt by 189 percent in eight years, while Obama's percentage is 49 in 3.5 years. Reagan's annual deficits went up 7 percent in his first three years, but Obama's have come down 3.5 percent since 2010. See NickGier.com/DebtGOPObama.pdf.
The Bush tax cuts (if they are retained) will be $600 billion of the debt in 2019. Obama's stimulus will account for only $75 billion and will have been worth it.
With regard to health care costs, the Congressional Budget Office estimates that Obamacare will cut the deficit $437.8 billion by 2019. Last year health insurance premiums went up 9 percent, but now they have come down 4 percent.
With regard to green jobs, only one company (not all!) has gone bankrupt. As Time magazine's Michael Grunwald writes: "The generation of renewable electricity has doubled, the stimulus has financed the world's largest wind farm, a half-dozen of the world's largest solar farms, a new battery industry for electric vehicles, and unprecedented investments in cleaner coal."
Finally, I find the evidence for Obama's "blaming" is just as non-existent as for his "apologies." According to a recent poll, 54 percent still blame Bush II for the economic mess, and only 32 percent say that it is Obama's fault.