In total, $150 billion has left Canada from 2014 to 2018.
Teck spent almost 10 years securing the necessary approvals from provincial and federal regulators.
Foreign direct investment in Canada dropped 56 per cent between 2013 and 2017.
A high price differential means lower-than-expected royalties for governments.
The Trump administration has rescinded or scaled back regulations.
Capital investment in Canada’s oil and gas sector declined by an estimated 44 per cent from 2014 to 2017.
Statistics Canada’s latest survey on investment intentions for 2018 found that private-sector investment is slated to fall again this year.
The recent move by Kinder Morgan on the Trans Mountain pipeline was a massive blow to Canada’s investment attractiveness.
Private-sector investment in factories and other structures down more than 23 per cent.