Proving that your point of English not being the official language is incorrect!
How? Because the Founders wrote in English over 200 years ago? Proves nothing. The United States does not have an official language. It's primarily English speaking (roughly 80%) with the bulk of the remaining 20% being Spanish speakers.
Even the Founders knew that society is a shifting entity. They built their documents to form a dynamic system that can roll with large scale changes in the social fabric.