Why can’t we call them on it? Pick an amount of money and offer to bet on it. Put your money where your mouth is. Flush them out in front of everybody. Those brave enough to take the bet wound never pay up even if the wager is on film. It certainly would embarrass them but then they have no shame. Perhaps donate the losses to the LOSERS legitimate charity. That way they screw their own kind when they don’t pay up.
Once a major candidate is willing to take on the bet(or NOT) every other candidate that wants in can get in on the action in their respective races. You see Republicans just don’t shoot off their mouths like the left. Call them on it.