The party-line vote marked the first time in the 55-year history of the Clean Air Act that Congress has moved to weaken the ...

The Senate voted Thursday to overturn an Environmental Protection Agency rule limiting the seven most hazardous air ...

S.J. Res 31, from Sen. John Curtis (R-Utah), would repeal Clean Air Act regulations issued last September as a replacement ...

The safeguards closed a loophole by requiring all “major” sources of seven hazardous air pollutants to maximize their emissions reductions.

California Governor Newsom rebukes House Republicans' move to challenge the state's vehicle emissions standards.

This week, the House of Representatives voted to block the state’s ban on the sale of new gas-powered vehicles, challenging ...

Republicans say the U.S. Environmental Protection Agency was wrong to reinstate the state's air pollution lawsuit policy ...

Lawmakers voted to stop the state from requiring that an increasing share of new trucks sold there have zero emissions.

Environmental Protector Agency Administrator Lee Zeldin announced a significant reorganization for the agency.

The House on Wednesday voted to axe California’s clean truck rules — defying Congress’s own internal watchdog in doing so.

Environmentalists and others say the coal plant exemptions could be part of broader plan to eliminate the new environmental ...

When it comes to regulating motor vehicle emissions, California has long been different. California was the first state in the nation to ...