Environmental activists and labor unions have worked together in the past, but are now on opposite sides of a heated dispute. The disagreement partly involves the building of an oil pipeline between Canada and the United States. The U.S. is currently the world’s largest producer of oil and gas. However, the administration of President Joe Biden aims to bring the country’s release of carbon gasses to net-zero by 2050. One of Biden’s first acts was to cancel the permit for the Keystone XL oil pipeline. The administration also said it is reducing the amount of oil and gas production permitted on federal land. The reactions to the administration’s moves show the difficulties of forming policy that affects many different groups. Climate activists celebrated the cancellation of the Keytone XL pipeline. But labor unions want to keep projects from being stopped.