Many Christians, and most skeptics, find the Mormon beliefs about the ancestors of American Indians being a tribe of Israel, the families of Lehi and Ishmael having built a ship and sailed from the Arabian Peninsula to the Americas, a stretch of the imagination.
http://en.wikipedia.org/wiki/Mormon_view_of_the_House_of_Joseph
So try this on for an example of a Christian "stretch." Pope Paul II issued a Papal Encyclical positing that the American natives were rational beings with a soul. The 1537 statement explained that the Indians had descended from sinful Babylonians who, during the Great Flood, fell off a mountaintop, grabbed onto a tree limb, and floated to the New World.
http://www.millersville.edu/~columbus/collide.html
Yup... floated on a tree limb through the Mediterranean and across the Atlantic without any fresh water or food. Some real survivalists, don't you think? Or some real liars hyping their religion.
What say you?