Religion in the United States is remarkable in its high adherence level compared to other developed countries. The First Amendment to the country's Constitution prevents the government from having any authority in religion, and guarantees the free exercise of religion. A majority of Americans report that religion plays a "very important" role in their lives, a proportion unusual among developed nations, though similar to other nations in the Americas. Many faiths have flourished in the United States, including imports spanning the country's multicultural heritage as well as those founded within the country, and have led the United States to become the most religiously diverse country in the world. Historically, in the 19th and early 20th centuries, the two major parties polarized along ethnic and religious grounds. In the North, most Protestants were Whigs or Republicans; most Catholics were Democrats. In the South, from the 1860s to the 1960s, most whites were Democrats (after 1865) and most blacks were Republicans (see Ethnocultural politics in the United States). The majority of Americans identify themselves as Christians (65% as of 2019), while non-Christian religions (including Islam, Judaism, Hinduism, and others) collectively make up about 6% of the adult population. Another 26% of the adult population identified as having no religious affiliation. According to the American Religious Identification Survey, religious belief varies considerably across the country: 59% of Americans living in Western states report a belief in God, yet in the South (the "Bible Belt") the figure is as high as 86%. The United States has more Christians than any other country in the world (US is the largest Christian nation in respect to population). Going forward from its foundation, the United States has been called a Protestant nation by a variety of sources. This is despite the fact that Protestants are no longer the majority in the United States (43%). Politicians frequently discuss their religion when campaigning, and many churches and religious figures are highly politically active. As important as religion is in politics, Thomas Jefferson, the third president of the United States, had to fight his way into office due to his controversial thoughts about religion. His writing was often seen as anti-Christian. It is argued that Jefferson’s win can be linked to him changing the election’s narrative from one about his own religious beliefs, to one about his tolerance of religious freedom (Lambert). However, to keep their status as tax-exempt organizations