In territories where Eastern traditions prevail, married clergy caused little controversy, but aroused opposition inside traditionally Latin Church territories to which Eastern Catholics migrated; this was particularly so in the United States. In response to requests from the Latin bishops of those countries, the Congregation for the Propagation of the Faith set out rules in an 1890 letter to François-Marie-Benjamin Richard, archbishop of Paris, which the Congregation applied on 1 May 1897 to the United States, stating that only celibates or widowed priests coming without their children should be permitted in the United States.