Can't have a rule against lying because truth is subjective. What is truth to one person, is a bald-faced lie to another
There are posters on this forum who believe that Barack Obama was a good man and a good president. Most of us know that is utter bullshit but that is what this country is all about, We all get decide if we love or hate Barack Obama or Donald Trump, and we get to think the ones who believe differently from the way we do, are brain-dead morons.
Like beauty, truth is in the eyes and ears of the beholder.