The gesture by which the sign of peace is exchanged is to be determined by the local episcopal conference. In some countries, such as the United States, the conference has laid down no rules, and the everyday handshake is generally used, while in other countries, such as India and Thailand, a bow is prescribed. A 2014 letter of the Congregation for Divine Worship and the Discipline of the Sacraments recommended that conferences choose gestures more appropriate than "familiar and profane gestures of greeting".