Are king cobras found in the U.S.?

Answer 1

Only in zoos

Cobras are not native (indigenous) to America, however there may be some specimens kept in Zoos.

Cobras are being found in the Everglades in Florida. They are being purchased as exotic pets and than those owners decide they cannot keep them and let them go. With no natural predators in America and the land not being used to them, i believe that in the near future Cobras will become a viral species here much like poison oak has.

There have been no cobras found in the Everglades. Some native snakes, like hog nosed snakes, act similar to the cobra when alarmed, and these may be the subject of such stories. There are pythons there.