La. Stat. tit. 16 § 839.4
The governing authority of the parish of St. Bernard shall annually, and at the same time it prepares its general budget, budget an amount sufficient to pay the salaries and expenses of the office of the district attorney of the Thirty-Fourth Judicial District provided for in R.S. 16:6 and as hereinabove set forth. The amount budgeted shall be paid to the district attorney, ten days after the adoption of the budget by the governing authority, who shall deposit same in a special account called the "district attorney's general fund" and shall be administered by the district attorney to pay the salaries and expenses authorized by law. Said fund shall be annually audited by the governing authority of the parish of St. Bernard and any surplus remaining in the fund on December 31 of each year shall be remitted to the parish general fund. Any supplemental appropriations made by the parish governing authority of the parish of St. Bernard to pay expenses and salaries as provided by R.S. 16:6 shall also be deposited in the district attorney's general fund and administered as provided herein. The operating budget shall not be reduced without the consent of the district attorney during the year in which it is effective, nor shall the district attorney's annual budget for any year be less than the annual budget for the preceding year without the consent of the district attorney, except in the case of a pro rata reduction in the operating budgets of all other departments in the parish of St. Bernard due to reduction in revenues.
La. R.S. § 16:839.4