MEXICO CITY — Corruption is so woven into daily life in Mexico that it has been enshrined in a common saying: “El que no transa, no avanza” — he who doesn’t cheat doesn’t get ahead.

Payoffs and bribes are the price of doing business, an invisible line in the budget that usually goes unchecked.

But a package of anticorruption measures being weighed by the national legislature could become a turning point in the country’s relationship with corruption.

At the center is an ambitious initiative to impose public disclosure rules for all public servants, at all levels of government. Called “3 de 3” — or “3 out of 3” — the initiative would require government officials to reveal their assets and potential conflicts of interest, as well as prove that they are paying taxes.