Think back sixty years. Imagine a situation in which the word of the President of the United States of America was set against that of an 'adult entertainer' of the period. I think we can reasonably assume that pretty much the whole world, even its most cynical souls, would be likely to assume with some certainty that credibility lay with the then POTUS.
Flash forward to the present. Let's face it, pretty much everyone knows with absolute certainty whose version of events in the disputed area between the two individuals answering to the descriptors above is the more credible.
How did we get to this place? And, more importantly, how can we get away?