Perhaps a useful response to lies from any politicians - this one about Trump - comes from a business person

When you are confronted with a pathological liar running for public office, you should respond with context and history, with literary flourishes and honesty.
Each and every bizarre falsehood that challenges the fabric of our democracy – be it about his income or his taxes, or about the charitable gifts he never was party to or the litigation he was, about how if he loses, the election must be rigged, this is how the reporters covering the campaign should respond.