The problem: archaeological evidence on the ground (again, please pardon the phrase) does not support the notion that any advanced culture (advanced architecture, etc.) ever extended as far north as the hill now known as Cumorah in New York in Precolumbian times.
Even wars, storms, and earthquakes as cataclysmic as that described by the Book of Mormon would've left some spectacular ruins near Cumorah, and they would've been found by now.
So where are they?
Excellent point. That combined with incontrovertible evidence that there is no direct genetic relation between Native Americans and Hebrews simply adds fuel to the fire that will eventually consume the Book of Mormon.
I appreciate your perspective.
I was just asking my husband, "If Mormonism is based on early American testimonies, where are all the American Indian Mormons?"