A U.S. congressional committee will accuse the biggest Wall Street firms of colluding with advocacy groups to force companies to shrink their greenhouse gas emissions, according to a report seen by Reuters ahead of its publication. The report, set to be released on Tuesday, refers to the firms as part of a 'climate cartel' and alleges that their actions may violate antitrust laws. The GOP-led committee launched the probe in late 2022 to investigate whether corporate efforts to tackle climate change constitute collusion. This first-of-its-kind report marks a significant development in the ongoing debate over the role of financial institutions in climate policy and their adherence to environmental, social, and governance (ESG) principles.