abolishing nafta is generally expected to make a different of about .2% of gdp, or something.

the reason is twofold:

1) nafta is not a free trade agreement.
2) abolishing nafta would not erect any tariffs (with the united states.), because that's been dealt with through various bilateral agreements, and the wto.

so, this idea that tearing down nafta is going to create a trade barrier between canada and the united states is just wrong. that barrier was removed long before nafta. and, nafta was not about removing barriers anyways - it was about creating rights for investors.

what abolishing nafta would harm would be people with large investments in the united states. we're talking about a very small bourgeois upper class that trudeau belongs to.

but who cares about them?