Obama once said something like "if you like your health care plan, you can keep your plan". That did not turn out to be true. People said he lied. Was he lying

Obama once said something like "if you like your health care plan, you can keep your plan". That did not turn out to be true. People said he lied. Was he lying? Did it matter whether he believed it at the time or not? Or maybe lying or not lying is the wrong lens to view that through, it seems to me to be more like a broken promise, since the person stating that had a high degree of control over the outcome.