TransCanada Energy (TC Energy) announced on July 2, 2021 that it would be filing a legacy North American Free Trade Agreement (NAFTA) claim under the Investor State Dispute Settlement (ISDS) system, seeking US$15 billion in compensation for the Biden administration’s revocation of the Keystone XL pipeline permit. While the United States-Mexico-Canada Agreement (USMCA), which replaced NAFTA, gutted ISDS between the United States and Canada, the parties agreed to allow a three-year post-termination period for “legacy” claims arising from investments that predate the entry into force of the USMCA. This is the basis for TC Energy’s claim. So, while it is demanding $15 billion in compensation from U.S. taxpayers, TC Energy actually took a financial hit of US$0.8 billion from the cancellation of the Keystone XL pipeline. the $15 billion reflects what the corporation in some way gauges to be its expected future profits.