Les, Maybe you can take our illegal Mexicans to Canada to handle your strawberry crop? That way we'll solve our illegal immigration problem and you'll have sweeter fruits to eat. 
Regarding higher American tariffs, Trump isn't interested in keeping them. He's using them as an initial negotiation gambit. If all the other countries would lower their tariffs to meet our lower ones, or all sides get rid of tariffs completely, the whole dispute would be over. Then your investments would be back to normal as will trade. Even better.
The fruit picking areas all over Canada have been employing Mexican migrant (and elsewhere) workers for years. There is a decades-long well-established temporary worker program with infrastructure (housing, chartered flights, etc.) put in place to deal with it. Nothing new there.
As for the health of the current American economy, good, everyone hopes it continues. But business investment has always occurred in cycles, it's too soon to attribute this growth spurt to anything in particular. It may have been aided by the tax cuts, but it's hard to believe that they would have worked their way through already and that's even more true of tariffs. In the case of tariffs, it's a double-edged sword, lots or American businesses will be hurt by higher priced imports. It's complicated and it is why countries spend years ironing out the details of trade agreements. What matters more is that over the long term, since about the 1980s, middle-class income has stagnated. This is not changing. The swings in the economy occur against that constant backdrop.
I disagree with one poster above about imported strawberries. Local ones are far better and always have been. With strawberries, picking them at the right time is what matters. Niagara strawberries were always better and cheaper than the imported American ones. Even here in Ottawa, local farms produce fantastic fruit and the local grocery stores preferentially stock local berries because they are better and cheaper. There are strawberry plants now that give multiple crops up until about September, so I don't even have to rush to stuff myself in June. West coast American cherries, however, are just fantastic.
