Commercial economists only use their core metric of GDP (which is cash flow) to the exclusion of all social and environmental metrics.  Mass immigration has massively negative impacts on Canadians, our society and the environment.  It enriches a few but pushes the rest of us into debt and degrades our quality of life.  It makes Canada less sustainable.

A commercial economist talks about the size of the commercial economy, not the well-being of Canadians or the health of the land.  Those limitations need to be put front and centre any time someone says "immigration is good for the economy".

Cheers,
John Meyer