Are Republicans Confused on the Issues Involved with the Sequester or Is Ezra Klein?

Ezra Klein tells us that both sides are badly confused about the issues at stake in the sequester. (The piece is more appropriately headlined in the print version, "Why both sides are misreading the budget battle.")

Klein explains that tax expenditures, like the mortgage interest deduction and the deduction for state and local income taxes, are really forms of spending. He says that the problem is that Republicans are just failing to understand this fact:

"No one has worked harder to disabuse...