"That's a lie." is different than "You're lying."
But the demorat chairman was way too stupid to real lies his miss/ms/mrs take. It's all a bout pro nouns now a days. / / /
Demorat reasoning is that Cassidy didn't know Janet's pronouns were That/They at the time. It should of been a question of Cassidy not using proper grammar. The correct response should of been "That's lying." /s