The Keystone XL is a proposed oil pipeline that would transport crude oil from the oil sands in Alberta, Canada, to various locations in the United States, including Nebraska. It is an extension of the existing Keystone Pipeline System, which has been operational since 2010. The project aims to increase the capacity for transporting oil and is designed to carry approximately 830,000 barrels per day. The pipeline has faced significant controversy and opposition due to environmental concerns, particularly regarding its potential impact on climate change and water resources. Supporters argue that it would create jobs and enhance energy security, while opponents highlight the risks associated with oil spills and greenhouse gas emissions.