I guess he has a point. Obama was a much better (and more frequent) liar than is Trump.
And Bill Clinton was a world class liar. Probably the best ever liar that sat in the Oval office.
Compared to those two; Trump is an embarrassment to the US. But you have to cut Trump some slack in the liar department; he is an inexperienced politician. Those two were seasoned pros.
Nicely done there