U-S President Donald Trump has signed executive actions to advance the construction of the Keystone XL and Dakota Access oil pipeline projects.
Trump says work on the pipelines will be subject to the terms and conditions being renegotiated by the US.
Former US President Barack Obama killed the proposed Keystone XL pipeline in late 2015, saying it would hurt American efforts to reach a global climate change deal.
The pipeline would run from Canada to US refineries in the Gulf Coast. The US government needs to approve the pipeline because it crossed the border.
- Sask. Premier Brad Wall continues so show support for Keystone X-L Pipeline
- Donald Trump says he will approve Keystone XL pipeline if elected
Last year, the U-S Army decided to explore alternate routes for the Dakota pipeline after the Standing Rock Sioux tribe and its supporters launched a massive protest.
They say the pipeline threatened drinking water and Native American cultural sites.
Transport Minister Marc Garneau says from an economic point of view, Keystone represents an opportunity for Canada to export a resource to the United States, and is a project the government supports.
Keystone needs U-S government approval because it crosses the international border.