,
Mike Pompeo, a private tour of St. Wenceslas Chapel inside
St. Vitus Cathedral on 12 August 2020 On 18 February 2012, Duka was made
cardinal priest of
Santi Marcellino e Pietro by
Pope Benedict XVI. On 21 April 2012, he was appointed a member of the
Congregation for Institutes of Consecrated Life and Societies of Apostolic Life and the
Pontifical Council for Justice and Peace. Duka was one of the
cardinal electors who participated in the
2013 papal conclave that elected
Pope Francis. Duka contributed to a book,
Eleven Cardinals Speak on Marriage and the Family, which urged fellow church leaders to maintain the church's rules regarding marriage and strengthen Catholic education about marriage and family life. The book was released before the international Synod of Bishops on the Family held in 2014 and 2015. In May 2016, Duka said that the pope could not fully understand the
European migrant crisis because he is not from Europe. Duka frequently spoke against
Muslim immigration into Europe. He said that Islam had "violent tendencies", and that Muslims could only be considered a "safe presence" if they made up less than five percent of the population. In 2016, Halík criticized Duka for allegedly dissociating himself from the pope and for being too close to Czech president
Miloš Zeman, as well as for accepting the highest state award from Zeman in October 2016. In February 2018, a group of Czech Catholic laymen wrote a letter to
Pope Francis, expressing concern about Duka's closeness to Czech politicians including
Václav Klaus, Miloš Zeman and
Tomio Okamura, and urging him not to extend Duka's term as archbishop when he submitted his resignation as required upon turning 75 in April 2018. On 13 May 2022, Pope Francis accepted Duka's resignation as archbishop. ==Later life and death==