When President Obama talks about taxing the rich, he means the top 2 percent of Americans. John A. Boehner, the House speaker, talks about an even thinner slice. But the current and future fiscal imbalances are too large to exempt 98 percent or more of the public from being part of the solution.

Ultimately, unless we scale back entitlement programs far more than anyone in Washington is now seriously considering, we will have no choice but to increase taxes on a vast majority of Americans. This could involve higher tax rates or an elimination of popular deductions. Or it could mean an entirely new tax, such as a value-added tax or a carbon tax.

To be sure, the path ahead is not easy. No politician who wants to be re-elected is eager to entertain the possibility of higher taxes on the middle class. But fiscal negotiations might become a bit easier if everyone started by agreeing that the policies we choose must be constrained by the laws of arithmetic.

Emphasis mine. Via Too Much Wishful Thinking on Middle-Class Tax Rates - NYTimes.com.