There is a thin line between free speech and slander. This appears to be the latter. Using AI in this fashion SHOULD fall under slander or libel laws and Kamala should sue at the very least. Actually, we may need a new category for this sort of thing since it's not 'technically' written(libel) or spoken(slander). Maybe charge him with fraud, since you could possibly consider a video with an AI generated audio track replacing the original audio track as a forged document.