While the president recently urged Mr. Orszag to remain, the calendar for drafting the next budget weighed in favor of Mr. Orszag's leaving sooner.
The Chancellor, whose title was changed to 'Minister over the Masses' in 8 BC, was chiefly responsible for drafting the government budget.
Mr Chubais has promised to involve regional leaders, for the first time, in drafting the budget.
Although Mr. Suozzi takes office on Jan . 1 he has no official role in drafting the budget for the first year of his term.
Drafting the budget for the 2015 fiscal year, which begins in October, was a challenge this time because the nonpartisan Congressional Budget Office projected sluggish economic growth.
Despite its relatively spot-free reputation and the billions of dollars in potential savings it has identified in recent years, House and Senate appropriators responsible for drafting the legislative branch budget seem determined to force the GAO to reduce, as part of a 5.2percentt drop in all congressional spending.
It will be able to amend the emergency 2003 budget prepared by the ruling American-led body, the Coalition Provisional Authority (CPA), and to draft the budget for 2004.
The changes resulting from the 2017 referendum, which went into effect in July 2018, also allow the president to appoint a cabinet, form and regulate ministries, declare a state of emergency for up to six months, and draft the budget.
Key tasks for the next government include negotiating EU funds for the next seven years, drafting the 2014 budget and trying to address popular anger over poor living conditions and high power prices.
Manuel Valls, the prime minister, insisted that France alone was responsible for drafting its budget, stating grandly that "France must be respected, it is a big country".
