Which president of US was opposed to direct democracy and why?

Every US President has opposed direct democracy because it would allow the unwashed masses to directly control policy as opposed to restricting policy votes and decisions to those people educated enough to make them. Additionally, in a direct democracy, it is likely the President would be out of a job.

As it currently stands, the US government is an indirect democracy, where citizens vote for politicians who will themselves vote on policy. A direct democracy circumvents the politicians' vote.