yes, he's obviously joking.

i'd still like to see him try it, though.

it's a reflection on the state of democracy in america, that this is legitimately comical, rather than frightening.

https://www.forbes.com/sites/tommybeer/2020/09/20/trump-threatens-to-issue-executive-order-preventing-biden-from-being-elected-president/#fe87fd076f6e