On what date did President Barack Obama announce the rejection of the Keystone XL pipeline?

President Barack Obama announced the rejection of the Keystone XL pipeline on November 6, 2015. This decision marked the end of a seven-year review process, during which the pipeline's environmental impact was a major point of contention. The proposed pipeline would have transported crude oil from Canada's oil sands to refineries on the Gulf Coast of the United States, and its potential impact on the environment was a concern for many people.

President Obama's announcement was seen as a major victory for environmental groups, who had been lobbying against the pipeline for years. In his statement, President Obama said that he believed the pipeline would not have served the national interest of the United States. The decision was also a blow to the oil industry and Republicans, who had been pushing for the pipeline's approval.