The years 1968-73 are a key period. The initial Irish response to the 1968 papal encyclical Humanae Vitae – reaffirming traditional Catholic teaching on contraception – was muted, compared with Europe or the United States, reflecting continuing Irish deference to clerical authority; clerical dissent was also limited. By 1972 however, two family planning clinics had opened in Dublin, and the ban on contraception was being challenged in the courts and the Oireachtas (parliament).This was happening against the backdrop of the Northern Ireland Troubles and a debate over minority rights. During the early 1970s there was a possibility that Ireland would come into line with other European countries, where laws against contraception had been liberalised in recent years. The Catholic Hierarchy argued that liberalising contraception would damage public morality, and that argument was repeated by the government. Given the political challenges of enacting legislation to enable even limited access to contraception, the government preferred to await the outcome of a Supreme Court judgment on the legality of the existing ban.