This morning the Libertarian Party announced that Donald Trump has accepted the invitation extended to him to speak at the Libertarian National Convention, May 24-27, in Washington, DC.
A similar invitation was extended to Joe Biden, but it has not been accepted.
Trump will answer questions on Saturday, May 25. Beforehand, the convention will vote on which topics should be included in the questions.
It seems unprecedented that a major party presidential nominee would speak at a minor party convention. According to Darcy Richardson, Eleanor Roosevelt spoke at the Liberal Party kick-off campaign event on August 2, 1944 in New York city, which seems to be the only historical precedent even remotely close.