WASHINGTON (AFP) ― The U.S. Supreme Court will weigh efforts Monday by President Barack Obama’s administration to regulate greenhouse gases, which industry groups and Republican-led states are labeling gross overreach.

Experts say even if the court sides with businesses, it would barely dent the administration’s efforts to tackle global warming.

But businesses worry they could face huge additional costs if the Environmental Protection Agency wins, as it could then order industrial sites to be designed and operated in specific ways that differ from current practices.

Frustrated by inaction in Congress, the EPA adopted regulations in 2010 to limit carbon emissions by stationary facilities, such as power plants, and by motor vehicles.

The court announced in October that it would review a petition by the National Association of Manufacturers and other groups challenging the EPA’s greenhouse gas regulations from stationary sources, declining to take up other appeals questioning the agency’s broader authority to fight global warming.

Under the rules, new power plants, factories and other stationary industrial sites would have to use the latest energy-efficient technologies.

But industry groups have criticized the regulations as bad for the economy.

NAM president and CEO Jay Timmons said the regulations were “one of the most costly, complex and harmful regulatory issues facing manufacturers and threatening our global competitiveness.”

A group of 12 Republican-led states, including Texas and Michigan, called it “one of the most brazen power grabs attempted by an administrative agency.”