^Note 5: The North Carolina Constitution of 1776 disestablished the Anglican church, but until 1835 the NC Constitution allowed only Protestants to hold public office. From 1835-1876 it allowed only Christians (including Catholics) to hold public office. Article VI, Section 8 of the current NC Constitution forbids only atheists from holding public office. Such clauses were held by the United States Supreme Court to be unenforceable in the <answer>1961</answer> case of Torcaso v. Watkins, when the court ruled unanimously that such clauses constituted a religious test incompatible with First and Fourteenth Amendment protections.
When did the U.S. Supreme Court rule clauses forbidding people from holding public office based on their religion was unenforceable? 
1961