Does not matter when.
A liar is a liar..a person who lies to manipulate is a con artist.
First President where he lies so much and so often, it is studied
"There’s a question journalists have been wrestling with ever since they realized that Donald Trump was more than a flash in the pan: Should they call him a liar, and his statements lies, when he says things that are clearly untrue?
When he said that he saw thousands of Muslims celebrating in New Jersey on 9/11 – that wasn’t true, but was it a lie, or did he really believe it?
Or when he said that millions of illegals voted in the presidential election – there’s not a shred of evidence to support the allegation, but again, did Donald Trump lie?
He was a prominent voice in the so-called birther movement, contending Barack Obama was not born in the United States. Another false statement, but if Donald Trump, for whatever nutty reason truly believed it, was he lying?
Trump said Hillary Clinton “soundly slept in her bed” during the 2012 attack in Benghazi, Libya. The attack happened at 3:30 in the afternoon Washington time."
How Should the Media Handle Trump's Many False Statements?