WASHINGTON (AP) — Large and small companies have told Republican-led congressional committees what the party wants to hear: dire predictions of plant closings and layoffs if the Obama administration succeeds with plans to further curb air and water pollution.

But their message to financial regulators and investors conveys less gloom and certainty.

The administration itself has clouded the picture by withdrawing or postponing some of the environmental initiatives that industry labeled as being among the most onerous.

Still, Republicans plan to make what they say is regulatory overreach a 2012 campaign issue, taking aim at President Barack Obama, congressional Democrats and an aggressive Environmental Protection Agency.

“Republicans will be talking to voters this campaign season about how to keep Washington out of the way, so that job creators can feel confident again to create jobs for Americans,” said Joanna Burgos, a spokeswoman for the House Republican campaign organization.

The Associated Press compared the companies’ congressional testimony to company reports submitted to the Securities and Exchange Commission. The reports to the SEC consistently said the impact of environmental proposals is unknown or would not cause serious financial harm to a firm’s finances.

Companies can legitimately argue that their less gloomy SEC filings are correct, since most of the tougher anti-pollution proposals have not been finalized. And their officials’ testimony before congressional committees was sometimes on behalf of —and written by — trade associations, a perspective that can differ from an individual company’s view.

But the disparity in the messages shows that, in a political environment, business has no misgivings about describing potential economic horror stories to lawmakers.

“As an industry — we have said this before — we face a potential regulatory train wreck,” Anthony Earley Jr., then the executive chairman of DTE Energy in Michigan, told a House committee on April 15. “Without the right policy, we could be headed for disaster.”

The severe economic consequences, he said, would be devastating to the electric utility’s customers, especially Detroit residents who “simply cannot afford” higher rates.

Earley, who is now chairman and CEO of Pacific Gas & Electric Corp., said if the EPA had its way, coal-fired plants would be replaced with natural gas, leading to a spike in gas prices. He said he was testifying for the electric industry, not just his company.

But, in its quarterly report to the SEC, Detroit-based DTE, which serves three million utility customers in Michigan, said that it was “reviewing potential impacts of the proposed and recently finalized rules, but is not able to quantify the financial impact … at this time.”

Skiles Boyd, a DTE vice president for environmental issues, said in an interview that the testimony was meant to convey the potential economic hardship on ratepayers, while the SEC report focused on the company’s financial condition.

“It’s two different subjects,” he said.

California Rep. Henry Waxman, the senior Democrat on the House Energy and Commerce Committee, said the SEC filings “show that the anti-regulation rhetoric in Washington is political hot air with little or no connection to reality.”

House Republicans have conducted dozens of hearings and passed more than a dozen bills to stop proposed environmental rules. So far, all the GOP bills have gone nowhere in the Democratic-run Senate.

“I will see to it, to the best of my ability, to try to stop everything,” California Sen. Barbara Boxer, the

Democratic chairman of the Senate’s environment committee, vowed in reference to GOP legislation aimed at reining in the EPA. She predicted Republicans “will lose seats over this.”

The Obama administration has reconsidered some of the environmental proposals in response to the drumbeat from business groups. In September, the president scrubbed a clean-air regulation that aimed to reduce health-threatening smog. Last May, EPA delayed indefinitely regulations to reduce toxic pollution from boilers and incinerators.