Samuel Morse issued warnings about sexual corruption in the Catolic Church arguing that Jesuit priests were undermining American education. He has formed the native American Democratic Association in 1835.
Even though Morse’s opinions were within the mainstream by the time, his anti-Catholic and anti-immigrant posture lead to intolerance. These views would explode violently in the 1840s, especially in Philadelphia, where the deadly “Bible Riots” of 1844 left dozens dead, Catholic churches in ruins, and hundreds of homes destroyed.
I think nativist organizations are based on narrow religious belief, leading to intolerance against any foreign ideas that can contribute to human evolution.