What if Canada has no free trade agreement?

What if Canada had no free trade agreement with US now? It would be as if we returned to 1993, and US was another foreign country. How would it impact Canada? If Canada could survive in 1993 and before, could we do so now? I think we could, admittedly painful for the first 5 to 10 years. But could we maneuver it?

EDIT - Thank you very much for everyone's input. I get such valuable and diverse perspectives and information. This sheds more light to the questios in my mind, which are how we dig our ways out of this and can we? Please continue the vibrant discussion. I love to hear more.

And to the US Redditors, you can see our resolves and unity.