Oklahoma: A Supreme Court ruling that limits the power of the Environmental Protection Agency (EPA) to regulate greenhouse gas emissions from power plants has drawn opposition and criticism across the United States. US bishops expressed their disappoinment due to the ruling.

"The Catholic bishops of the United States have long-supported the EPA's ability to regulate greenhouse gases in order to address climate change," read a July 1 statement from Archbishop Paul Coakley of Oklahoma City, chair of the U.S. bishops' domestic justice committee.

"We are, therefore, disappointed today that following the Supreme Court's interpretation of the Clean Air Act the EPA will have significantly restricted authority to regulate greenhouse gases from power plants."

In its 6-3 decision in West Virginia v. EPA on June 30, the court ruled that the Clean Air Act does not explicitly give the EPA wide-ranging power to regulate the entire energy industry.

"A decision of such magnitude and consequence rests with Congress itself, or an agency acting pursuant to a clear delegation from that representative body," Chief Justice John Roberts wrote in the majority opinion.

The EPA's regulations, he said, were an example of "agencies asserting highly consequential power beyond what Congress could reasonably be understood to have granted."

Coakley wrote that "both reasonable regulation and legislation are critical for addressing the threat and challenges of climate change. We call upon Congress to give the EPA the necessary authority to meaningfully regulate greenhouse gases."

He quoted a 2018 memo from the U.S. bishops' office of general counsel to the administrator of the EPA urging that the agency has "both the statutory authority and responsibility to take regulatory action… It is hard to foresee a scenario, under current economic and technological conditions, in which the EPA faithfully carries out its mandate to protect the public health from greenhouse gases without significantly affecting political and economic realities."

Laudato si', Pope Francis' 2015 encyclical on care for our common home, covered a wide range of topics in relation to the environment – from climate change, species extinction, and resource depletion, to waste, economic structures, and global inequality.

The encyclical praised St. Francis of Assisi for living out an "integral ecology" with joy and authenticity.