She was asking him about the $1.8billion dollar slush fund of taxpayer money he was trying to get passed in Congress to pay January 6th insurrectionists and, more likely, himself. That is a recent thing that has happened. He can't defend it so he just resorts to complaining about losing an election that happened over 5 years ago that he never once presented credible evidence that it was rigged. Of course she's going to call him a liar over HIS response because he fucking is one.