In 1893 It was a decision by the Supreme Court of the United States that affirmed the lower court ruling that the tomato should be classified as a vegetable rather than a fruit.
So by law the Tomato is a Vegetable. Genetic evidence has shown that the tomato is a fruit. Thankfully, you will not be incarcerated for treating a tomato one way or the other. Neither, will you be considered a less than understanding person as well.
Just because the law of the land makes the Tomato a vegetable does not actually make it one.
Hmmmm, I wonder what else that applies too...