In Evangelii Gaudium, Pope Francis describes the role of the state:
240. It is the responsibility of the State to safeguard and promote the common good of society.[Cf. CCC 1910; Pontifical Council for Justice and Peace, Compendium of the Social Doctrine of the Church, 168] Based on the principles of subsidiarity and solidarity, and fully committed to political dialogue and consensus building, it plays a fundamental role, one which cannot be delegated, in working for the integral development of all. This role, at present, calls for profound social humility.
And the role of the Church in concert with the state:
241. In her dialogue with the State and with society, the Church does not have solutions for every particular issue. Together with the various sectors of society, she supports those programs which best respond to the dignity of each person and the common good. In doing this, she proposes in a clear way the fundamental values of human life and convictions which can then find expression in political activity.
What the Church offers at times are less the solutions and more the measuring stick of what adheres to basic human values.