Ideology and the Environment
Pollution was once treated as a problem of externalities, incentives, and institutional competence. How did it become another test of political identity?
American environmental policy was never free of conflict, but it once rested on a broad agreement: pollution imposes costs on others, government has a legitimate role in correcting those costs, scientific expertise matters, and policy should seek the greatest environmental gain at the lowest reasonable cost. Republican presidents created and strengthened the EPA, supported an international ozone treaty, and embraced emissions trading, while Democrats negotiated within the same general framework. This framework no longer exists. Republicans increasingly treat climate action as an ideological threat, while Democrats use environmental urgency to justify costly subsidies, mandates, and deadlines.
This is the first in a series on how energy and environmental policy moved away from economic principles and toward partisan warfare.
A Problem Economists Thought They Understood
Environmental policy once rested on a broadly shared economic principle: when an activity imposes uncompensated costs on others, policy should seek to make those costs part of the decision. Economists and political leaders could disagree over taxes, tradable permits, standards, liability rules, or public investment while accepting that common approach.
That consensus has collapsed. Republicans increasingly treat climate action as an ideological threat, while Democrats too often invoke environmental urgency to justify costly subsidies, mandates, and deadlines without sufficient economic scrutiny. How did a field once organized around externalities, incentives, and comparative costs become another arena of partisan identity?
The Bipartisan Environmental Settlement
Republicans and Democrats have long disagreed profoundly over the proper role of government. Historically, however, they often worked together to improve the environment using a shared framework: identify the harm, compare the costs of alternative remedies, and seek practical results.
EPA and clean air. In 1970, Richard Nixon established the Environmental Protection Agency and selected William Ruckelshaus as its first administrator. Nixon also signed the modern Clean Air Act after it passed the Senate 73–0 and the House 375–1.
Clean water. Nixon vetoed the 1972 Clean Water Act largely because of its cost, but Congress overrode him with bipartisan supermajorities. Bipartisanship did not eliminate disagreement; it preserved a common commitment to cleaner air and water.
Hazardous waste. Jimmy Carter signed the Superfund law in 1980, establishing federal authority to clean up contaminated sites and require responsible parties to pay. Ronald Reagan signed major amendments strengthening the program in 1986.
EPA credibility. After an early Reagan-era scandal weakened confidence in the agency, Reagan brought Ruckelshaus back in 1983 to restore its independence and credibility.
Ozone protection. Reagan’s administration helped negotiate the 1987 Montreal Protocol, which phased out chemicals that damaged the stratospheric ozone layer. The agreement became one of the most successful examples of international environmental cooperation.
Lead reduction. During the Reagan administration, the EPA also accelerated the phaseout of lead from gasoline, producing major public-health benefits.
Acid-rain trading. President George H. W. Bush and EPA Administrator William K. Reilly secured the 1990 Clean Air Act amendments with overwhelming bipartisan support. Its acid-rain program capped sulfur-dioxide emissions while allowing companies to trade permits, combining an environmental limit with market flexibility.
Brownfields. Under George W. Bush, EPA Administrator Christine Todd Whitman helped advance bipartisan legislation encouraging the cleanup and redevelopment of contaminated industrial properties.
Climate policy. The shared framework extended into the climate debate. John McCain and Democrat Joseph Lieberman introduced a market-based cap-and-trade proposal in 2003, and McCain campaigned for greenhouse-gas limits in 2008.
These policies were contested, and their results were not uniformly successful. But mainstream Republicans and Democrats generally agreed that environmental harms required action and that the debate should focus on which remedy worked best—not on whether the problem deserved a response.
That consensus—and the ability to work together—has collapsed. Several forces may explain why.
1. Climate change is a harder environmental problem. Smog, sewage, lead, acid rain, and toxic waste produced visible and often local harm. Carbon dioxide has global, cumulative, and delayed effects. Its costs are harder to observe, and the benefits of reducing emissions are dispersed across countries and generations.
That difference does not change the economics. Greenhouse-gas emissions impose costs that emitters do not fully bear. They remain negative externalities, and the proper debate should concern how to price or regulate those costs.
2. The parties no longer describe the same problem. Many Democrats call climate change an existential emergency, making delay or compromise appear morally unacceptable. Many Republicans argue that carbon dioxide is not pollution, that the threat is exaggerated, or that government should do little about it. A debate over how to correct an externality becomes a clash between catastrophe and denial.
3. Energy policy became part of political identity. Climate policies impose different costs on oil-producing regions, farming communities, industrial areas, rural drivers, and affluent cities. Electric vehicles, pickup trucks, gas stoves, pipelines, wind turbines, and solar panels have also become partisan symbols. Once technologies signal political allegiance, evidence about where they work and what they cost becomes less influential.
4. Democratic policies became larger and more prescriptive. The emphasis shifted from changing relative prices toward subsidies, mandates, and deadlines intended to transform entire industries. California’s vehicle rules and the Inflation Reduction Act illustrate an approach that often selects preferred technologies rather than allowing consumers and businesses to find the least costly way to reduce emissions.
5. Republican opposition became more categorical. Republicans have legitimate concerns about regulatory costs, reliability, rural burdens, permitting, and excessive administrative power. But the Trump administration has gone beyond challenging poorly designed policies by obstructing wind and solar projects even when they may provide economically competitive power and environmental benefits.
6. Economic interests now reinforce the divide. Traditional energy producers defend existing markets, while clean-energy companies defend subsidies, tax credits, mandates, and regulations that expand their own. Automakers, utilities, fossil-fuel companies, renewable-energy developers, and environmental organizations all use the political process to protect or enlarge their positions.
7. The political process itself may have deteriorated. We should not romanticize the past, but leaders such as Henry Jackson, Hubert Humphrey, Edmund Muskie, Jacob Javits, Clifford Case, Howard Baker, John Chafee, Mark Hatfield, and Richard Lugar often combined strong convictions with policy expertise, cross-party negotiation, and a willingness to accept partial victories.
Today, Congress legislates less, presidents rely more heavily on executive action, and each administration attempts to reverse the last. The political system increasingly rewards loyalty, confrontation, and ideological certainty rather than technical competence and durable compromise.
These forces reinforce one another. Democratic claims of impending catastrophe encourage sweeping programs, while Republican denial and obstruction reduce the incentive to design more disciplined alternatives. The result is no longer a competition between two economically coherent approaches, but a choice between expansive mandates and subsidies on one side and broad resistance to climate action on the other.
Today, Congress legislates less, presidents rely more heavily on executive action, and each administration attempts to reverse the last. Donald Trump’s personal hostility toward wind and solar is unusually explicit, but the deterioration is broader than one president. The political system increasingly rewards loyalty, confrontation, and ideological certainty rather than technical competence and durable compromise.
Missing from this debate is the approach economists once expected the parties to debate -- identify the external cost, place a price or limit on it, give households and businesses flexibility in responding, and assist workers and communities bearing disproportionate costs.