Treaty of Tripoli and Algiers in 1796  Treaty with Tripoli of 1805
ARTICLE 11.
As the Government of the United States of America is not in any sense founded on the Christian Religion,-as it has in itself no character of enmity against the Laws, Religion or Tranquility of Musselmen,-and as the said States never have entered into any war or act of hostility against any Mehomitan Nation, except in the defence of their just rights to freely navigate the High Seas: It is declared by the contracting parties that no pretext arising from Religious Opinions shall ever produce an interruption of the Harmony existing between the two countries.
ARTICLE 14th
As the Government of the United States of America, is not in any sense founded on the Christian Religion has in itself no character of enmity against the Laws, Religion or Tranquility of Musselmen, and as the said States never have entered into any voluntary war or act of hostility against any Mahometan Nation, except in the defence of their just rights to freely navigate the High Seas: It is declared by the contracting parties that no pretext arising from Religious Opinions, shall ever produce an interruption of the Harmony existing between the two Nations;