there are supposedly jaguarundi in Florida, introduced there decades ago. I have always been of the opinion that this was an established fact but I just did some googling before posting (luckily for me, or I would have looked silly!) and it seems there actually isn't any hard evidence that there are jaguarundi in Florida after all.
To quote Arizona Docent above, "the official line is no", but lots of other people swear they are there.