Wait, really? Either you're setting impossibly high artificial standards or people just don't think it's worth their time or something, because he has a mountain of them, far outdistancing the lie counts of anyone else anywhere. He uses lies as a strategy, he's very good at telling them, and he does not care one bit if he's caught in one.
Case in point: The opioid bill that just passed earlier this year. He said it got almost no Democratic backing, even though it passed something like 400 to 8 in the House, and 99 to 1 in the Senate (with the 1 being a Republican). He said it, people squawked a bit, and then we all moved on. That's how he works.
If you're serious in making that challenge, it's one you can't possibly win.