A bald Eagle? No The Golden Eagle is a separate species of Eagle than the Bald Eagle. Perhaps you are confused by the maturing age of a Bald Eagle when it grows from a chick to an adult. It looks quite similar to a Golden Eagle.
To date the largest species of Eagle would be the Philippine Eagle (Monkey Eating Eagle) from the Philippines and neighboring isles. The second largest would be the Harpy Eagle.
well being that there is no such thing as an American eagle, i would have to say the golden eagle. If u mean the bald eagle as the American eagle then the golden eagle is still bigger