Hamington argues not for an ethics of care, but that our bodies are built for caring. He takes caring to be "foundation of morality rooted in our body and bodily practices." His contribution to the literature is to bring together phenomenological (via Merleau-Ponty) and American Pragmatism (via Addams) into focus via a feminist lens. We cannot ignore the facts of our bodies in moral decision making. Because we are always embodied, we must have theories that do not abstract away from it, but rather remind of this inescapable fact. This seems an obvious point, but there you have it.
Blame it on Descartes that it took so long. And Kant.