If See was an enrolled member, or at least half Chippewa by blood, MacLeod might well be a legitimate Indian. But if See was only 1/4 or 1/8 Chippewa, then probably not. None of the postings I scanned addressed this crucial point.
Unless Lealos knows MacLeod's genealogy, he can't call MacLeod a "Native American movie star" or a "Chippewa Indian." As always, having a small amount of Indian blood doesn't make one an Indian. And Lealos can't call MacLeod a movie star in any case. MacLeod never had a starring movie role and earned most of his fame in TV.
For more on identity issues, see The Myth of Churchill's Iroquois Ancestors and Churchill and Clinton Are Cherokee?