If you wanted to reproduce the conditions that led to the Great Recession in 2007, the easiest way would be the plan unveiled last week by House Republicans: gut the regulators who are supposed to keep the worst business practices in check.

At a time when the economy is still reeling from the downturn, House Republicans released a spending bill that would severely cut the budget of the Commodity Futures Trading Commission, which would keep it from regulating potentially toxic swaps and other derivatives. It refused to give the Securities and Exchange Commission the extra money it needs to carry out the Dodd-Frank financial reform bill.

And the bill would cripple the Internal Revenue Service, limiting its ability to detect tax avoidance, particularly by businesses and the wealthy. (The I.R.S. cut, designed to impede the agency’s role in health care reform, will inevitably increase the deficit.)

The proposed cuts are the latest in a long series of efforts by Republicans to keep the government from tempering even the most economically dangerous desires of business. Having failed to prevent the enactment of Dodd-Frank and the new Consumer Financial Protection Bureau, they are imposing their will with what may be their most effective weapon — choking off the air supply of regulators by limiting the money they can spend. These agencies had already been hesitant to impose a real crackdown; the cuts will make the situation worse.