I wonder how it will affect lemon growers. Many citrus growers in California are already struggling with the low prices and in our area many orange groves have been left to die, partly its cost of water, but its the metrics of paying all of the costs and getting a high enough price to return even a small profit.
I agree with Sylvain, it is an issue for trade if there isn't a give and take. Though some crops, like avocados, can also bring in pests, like thrips, which do scar the fruit. We didn't have those ( I'm told by old time farmers) before fruit came in from certain countries that are not as careful as California has become.