• The Keystone pipeline was proposed by TC Energy (formerly TransCanadian Corp.) in 2005 to transport new hard-to-recover heavy oil deposits from the oil sands in Canada to US refineries.

  • The pipeline system is 2,687 miles (4,324 km) long.
  • Keystone has been controversial for years due to concerns about its local and global environmental impact.
  • On January 20, 2021, President Joe Biden canceled the construction permit for the Keystone XL pipeline.