From and extended interview with Sen. Bernie Sanders in the Guardian:
The bad news, the very bad news is that we have a president who is a pathological liar. I say that not in a partisan way because I have many conservative friends who I disagree with on every issue who are not liars, they believe what they believe. But Trump lies all of the time and I think that is not an accident, there is a reason for that.
He lies in order to undermine the foundations of American democracy. One of the concerns that I have is not just his reactionary economic program of tax breaks to billionaires and devastating cuts to programs that impact the middle class, working families, lower-income people, children, the elderly, the poor, but also his efforts to undermine American democracy in the sense of making wild attacks against the media, that virtually everything that mainstream media says is a lie. And we have reached the stage where a United States congressman named Lamar Smith from Texas – and I’m paraphrasing him but you can look up the quote – said ‘Well, if you want to know the truth the only way you can really get the truth in America is directly from the president.”
And you have a president who has called a judge nominated by George W Bush a “so-called” judge because he issued an opinion differing with the president. He has come up with wild accusations about three to five million illegal people voting in the election which is an attack on every election official in the United States of America and basically suggesting to the American people that the elections do not reflect reality, that the elections are fraudulent.
So what you have is a president who says that what you read and see is fraudulent, that judges are not real judges if they offer an opinion different than him, and that elections are not based on real vote counts but are also fraudulent. You have all that and more going on, which leads to only one conclusion: and that is that the only person in America who stands for the American people, the only person in America who is telling the truth, the only person in America who gets it right is the President of the United States, Donald Trump. And that is unprecedented in American history.