Canada

I grow figs in North Eastern Nova Scotia. No mangos though. Booooo

I am a disabled small farmer and know much of this from our farming activity. I also searched the government of Canada website to ensure I was correct, for the rules around importing fresh vegetables. I'll see if I can find the link again for you when I get home.

Here is a page with the non Canadian bodies in charge of testing prior to importation per vegetable or fruit. We test imports in Canada for pesticide residues and sulfites but there are also ministerial exemptions as well. That means some foods that don't even meet Canadian standards can be imported and sold here with permission of the canadian government.

You can also find links from here to all the answers you are looking for regarding imported fresh vegetables and I believe any other imported food products though I didn't do a deep dive. They are mostly categorized by product and don't just include import details for 'murica but all the countries Canada imports from.

I was specifically looking for details about lettuce and leafy greens in my search.

https://inspection.canada.ca/en/importing-food-plants-animals/food-imports/food-specific-requirements/fresh-fruit-vegetables#a5

Even if they just delegate, a moment later they'll turn around and threaten California funding unless regulation is relaxed.

I believe after having read a bit about this that they are delegating inspections to contractors according to most reports. But it is not finalized yet so it's all just speculation.

EDIT: They did fire all those responsible for government inspections however. That has already taken place. So if there is no one to do the inspections one can only assume...