"I think the new Congress can do it ... in September," López Obrador told reporters at his daily news conference on Tuesday about the possible passage of the bill, noting that September is a month of national celebration.

The bill, aimed at eliminating corruption in the judicial branch, also has the support of his successor, Claudia Sheinbaum, the winner of the June 2 presidential election, Xinhua news agency reported.

Dismissing market "hesitancy" over the proposal and the peso's decline, Lopez Obrador said Mexico's economy is solid and public finances are in good shape.

Additionally, he said, a healthy investment market requires a strong legal framework to flourish.

He stressed, "There may be these imbalances now, but this is about true rule of law, which speculators, not investors, want. True business owners want the rule of law."

López Obrador and Sheinbaum met on Monday and agreed to promote broader discussion in the country around the proposed bill, which calls for a constitutional amendment to allow judges, magistrates and justice ministers to be elected by popular vote Is.