David Brooks is worried because:
"Raising taxes on the rich is popular, but nearly every other measure that might be taken to address the fiscal crisis is deeply unpopular. Sixty-three percent of Americans oppose raising the debt ceiling; similar majorities oppose measures to make that sort of thing unnecessary."
Actually this is not true. Insofar as it is necessary to deal with long-term budget issues there is is widespread support for most of the measures that would be required. Polls consistently show majority support for a quick end to the wars in both Iraq and Afghanistan, as well as sharp cuts in the military budget. Polls also show support for negotiating Medicare drug prices with the prescription drug industry, as well as opening up the Medicare program for anyone who chose to buy into it.
These measures and the others put forward in the Progressive Caucus budget last week would be sufficient to reach a balanced budget in a decade. Brooks apparently does not approve of the items in the Progressive Caucus budget, but that is not the case of the public at large.
This budget does not even include other items that would produce large budget savings that would almost certainly produce no negative public reaction. For example, Congress could require the Fed to buy and hold substantial amounts of government debt. If the Fed held $3 trillion in debt (a bit more than its current holdings) throughout the decade, it would save close to $1.5 trillion in interest. (The Fed refunds the interest on the debt it holds to the Treasury.) It can offset the potential inflationary impact of increasing reserves by raising reserve requirements.
There are also huge potential long-term savings from allowing Medicare beneficiaries to buy into the health care systems of countries that provide care more efficiently (i.e. everyone). The savings could be split between the government and the beneficiary. This would hand beneficiaries tens or even hundreds of thousands of dollars over their retirement while saving taxpayers an equal amount. It is difficult to see why there would be opposition from the general public to giving beneficiaries this choice.
In short, people who are familiar with the numbers know that the middle class can easily live with the changes that might be needed to address long-term budget problems. The wealthy and powerful interest groups, like the insurance and pharmaceutical industries, are the more obvious problem.
Brooks also gets some basic facts wrong. The stagnation of middle class incomes is not new. It dates from mid-70s. Furthermore, the middle class has not consumed lavishly, as he claims. They don't have the money to spend lavishly. It has been the wealthy, who have benefited from a huge upward redistribution of income over the last three decades, who have been spending lavishly.
It is also worth noting that Brooks is warning of a potential calamity if the deficit is not addressed. He apparently is not aware of the collapse of the housing bubble which has cost tens of millions of workers their jobs and wiped out much of the savings of tens of middle class families. If he were, he would know that the crisis is here now.