How the Banks Endangered Medicare By SIMON JOHNSON

Simon Johnson is the Ronald A. Kurtz Professor of Entrepreneurship at the M.I.T. Sloan School of Management and co-author of “White House Burning: The Founding Fathers, Our National Debt, and Why It Matters to You.”

The world’s largest banks have been accused of many things in recent years, including taking excessive risk in the run-up to 2008, doing great damage to the American economy by blowing themselves up and then working hard to resist any sensible notions of financial reform.

All of this is true, but it misses what is likely to be the most profound negative impact of the banks’ behavior on most Americans. The banks’ actions led directly to an increase in government debt, which in turn has made the reduction of that debt by “cutting runaway spending” a centerpiece of the Republican presidential campaign to date.