The Kauffman Amish Mennonites, also called Sleeping Preacher Churches or Tampico Amish Mennonite Churches, are a plain, car-driving branch of the Amish Mennonites whose tradition goes back to John D. Kauffman (1847–1913) and Noah Troyer (1831–1886) who preached while being in a state of trance and who were seen as "sleeping preachers".

Plain dress is a practice among some religious groups, primarily some Christian churches in which people dress in clothes of traditional modest design, sturdy fabric, and conservative cut. It is intended to show acceptance of traditional gender roles, modesty, and readiness to work and serve, and to preserve communal identity and separation from the immodest, ever-changing fashions of the world. For men, this often takes the form of trousers secured by suspenders, while for women, plain dress usually takes the form of a cape dress along with a headcovering.