Yet in the course of Francis' pontificate, the Secretariat of State has step by step regained importance.
In a letter to Cardinal Parolin dated Oct. 14, 2015, Pope Francis underscored that the "status quo" of the Curia offices had to be respected until the reforms were completed, which means the Secretariat of State is still the central body of the Curia.
As the Secretariat of State gained importance, the Secretariat for the Economy lost some of its impact. The work of the Secretariat for the Economy was at first slowed down by the drafting of its statutes, and afterwards by resistance from elsewhere in the Curia.
However, it is simplistic to read the facts as the struggle between an opaque Italian bureaucracy and a transparent Anglo-Saxon style, as some English-language media have suggested.
The path to Vatican financial transparency and accountability has always found resistance, and Cardinal Pell's Secretariat has simply become the perfect target for acts of resistance.
Who is it that doesn't want the procedures carried forward? This is the recurrent question in Vatican financial bodies. According to a source familiar with Vatican finances "this kind of resistance comes out at the mid-ranks, while the top ranks exploit the resistance to reinforce their position."
So, some internal resistance fell in the dialectic between the Secretariat for State and the Secretariat for the Economy. The fact that both of those are called "Secretariat" is important, as they are formally put on par with one another.
The presence of the Secretariat for the Economy might diminish the impact of the Secretariat of State, and a balance of power has yet to be achieved.
Taking advantage of the fact that Cardinal Pell, an Australian, is a real decision maker, the old guard of the Curia are able to slow the implementation of his decisions with procedural excuses.
The case of the PwC suspension is revealing. According to CNA's source, PwC was hired by the Council for the Economy, which made the decision by an unanimous vote.
However, the Secretariat of State claimed the need for further control, and raised issues for discussion, such as: given that Vatican City is a sovereign state, and not a company, is it even proper that its financial books undergo external auditing?
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The issue of sovereignty is crucial for the Holy See, which has fought recently to be independent of any secular power: sovereignty has helped the Church to act independently throughout the world, without depending on any secular power, and to be able to have an independent voice in the international scene, thus being able to advocate for human rights and the common good without being accused of any partiality.
Sovereignty is not just a notion: the Holy See's sovereignty insists on the independent, albeit small, territory of the Vatican City State, which like any other independent nation has its internal jurisdiction and legislation, and is involved in international relations.
This sovereignty implies that the Vatican dicasteries are considered on par with the ministries of any other country – which includes a level of confidentiality in handling their budgets.
For Cardinal Pell, the real challenge is to introduce international accountability standards within a state system: to find a balance between the needs of a manager and those of a governor.
When this balance is upset, Cardinal Pell's will for financial transparency may be stymied by fears that the Holy See could lose something of its sovereignty.
The fracas over the suspension of the PwC audit shows that the discussion is not over, and the tensions between the Vatican's secretariats will continue.