Bruce Bartlett has posted A Tax Increase Is in the Forecast on the National Center for Policy Analysis web site. Here is the opening:

For more than a year, I have been predicting—not advocating, just predicting—a significant tax increase to deal with the budget deficit. My hypothesis has been that sooner or later financial markets would put pressure on Congress to act on the budget deficit, and that the magnitude of the problem would be too great to deal with on the spending side alone.