Because it's what the stupid dumbs who voted for her needed to hear from her. She knows it so she lies. No shock about that.
Give the public what it wants. You don't have to like or use it or believe in it. As long as they do well ain't that great? They will believe anything no matter how absurd imbecilic idiotic queer peculiar odd. What could it hurt to do that? They get what they want and you get what you want. Who gets hurt by lies? Aren't they the real thing that greases Capitalism? The bigger the better?