The 1917 Mexican constitution attributed to the President of the Republic the power to authorize the use of secret fiscal items.
So did, for example, the governments of Luis Echeverria (1970-1976) and Carlos Salinas de Gortari (1988-1994), whose corruption scandals were completely uncovered after decades.
The Senate also considered it necessary to promote new conceptions for resource allocations to guarantee transparency and effective auditing.