Dep't of Health and Human Res., 532 U.S. 598, 121 S.Ct. 1835, 1843 n. 10 (2001), the Court would reiterate long-standing principles that [o]nly States and state officers acting in their official capacity are immune from suits for damages in federal court, and that [p]laintiffs may bring suit for damages against all others, including municipalities and other political subdivisions of a State.