Central bank data released in the wake of Sunday's presidential elections show the country's economy is strengthening apace.
The planned change is part of an effort to arrange political support for the approval of pension reform.
Jorge Brito alludes to press reports of testimony given in a high-profile corruption case involving Argentina's former VP Amado Boudou.
The former president will meet the ruling coalition candidate in the election's second round on December 17. The votes of dark horse leftist candidate Beatriz Sánchez may prove decisive.
Though still opposed to 'sudden death' aspect of the US-proposed 'sunset clause', both countries are indicating they would discuss formalizing a regular review process.