What is the largest snake found in US?

Probably the Burmese python - however, it's not a native species ! Wild-caught specimens are those that have been released by stupid owners who didn't know how big they were going to get ! (Though if they'd done their 'homework' before buying one - they would !) Instead of contacting animal rescue - they simply released them into the wild, and now they have a self-inflicted 'problem' - because these very large snakes are not only eating the local wildlife - but also domestic pets !