Here's a prediction: The media will report today that the federal budget deficit is big and getting bigger. What most of them won't report, alas, is that the cause of these deficits is an explosion in federal spending. The era of big government is back, bigger than ever.

The real news in yesterday's Congressional Budget Office semiannual report is that federal expenditures on everything from roads to homeland security to health care will on present trends reach 21.5% of GDP next year. That's a larger share of national output than at anytime since 1992. If the cost of the federal takeover of Fannie Mae and Freddie Mac prove to be large and are taken into account, next year federal outlays could be higher as a share of the economy than at anytime since World War II. In this decade alone, federal spending has increased by almost $1.2 trillion, or 57%.

The federal deficit is expected to hit $407 billion for fiscal 2008 (which ends at the end of this month) and $438 billion next year. Still, the deficit is expected to be only 3% of GDP, which is in line with the average of the last 30 years. We hope Congress and the Presidential candidates don't obsess over the deficit per se, because the real fiscal drag from government comes from how much it spends, not how much it borrows.

The Bush tax cuts also aren't the budget problem. Until this year federal tax collections have been surging. In the four years after the 2003 tax cuts become law, tax receipts exploded by $785 billion. This year revenues have declined by 0.8%, but a major reason is the $150 billion bipartisan tax rebate that has hit the Treasury without spurring the economy. Without these nonstimulating rebates, federal tax payments would have climbed another 2.5%, according to CBO. Revenue is expected to be a healthy 18.5% of GDP next year without any tax increase.

Another myth is that the war on terror has busted the budget. While operations in Iraq and Afghanistan are expensive, defense spending is $605 billion this year, or about 4.5% of GDP. That only seems large by comparison to the holiday from history of the 1990s, when defense fell to 3% of GDP. As recently as 1986, defense spending was 6.2% of GDP.