A warning from the United Nations' top court that failing to address climate change could violate international law could lead to greater public scrutiny of major projects in Canada, one expert says.

The ICJ issued an opinion on climate change that stated the obligations of the Paris Agreement come with legal liability. A concern raised by Trump as early as 2017.

The U.N.’s highest court is handing down a historic opinion on climate change Wednesday, a decision that could set a legal benchmark for action around the globe to the climate crisis .