Mexico’s Senate on Thursday night passed a sweeping proposal to dissolve several government-financed yet independent watchdog organizations, a move the president and her supporters said would help reduce corruption and waste. Critics have called it a step backward for transparency and regulation.

The duties of most of the seven agencies, which provided oversight on a host of issues, such as public information requests and price fixing in the telecommunications, pharmaceutical and energy sectors, would be absorbed by other parts of the federal government, overseen by the president.

Perhaps the most noteworthy of the agencies — the National Institute for Transparency, Access to Information and Protection of Personal Data, known as INAI — would have its responsibilities divided among a handful of existing federal agencies.

“The disappearance of these autonomous bodies represents a democratic setback,” the Mexican Association for the Right to Information, a nongovernmental group, said in a statement. The move, the group added, “weakens the mechanisms of control, transparency and protection of rights that have been built with great effort in our country.”

The constitutional amendment dissolving the agencies is part of a series of far-reaching proposals pushed by the former Mexican president, Andrés Manuel López Obrador, that are supported by his successor and mentee, Claudia Sheinbaum, and by their political party, Morena.

In September, Mexico passed an amendment overhauling the country’s judiciary, which supporters of the proposal said was riddled with graft, influence-peddling and nepotism. Critics warned that the move, which will see nearly all Mexican judges elected rather than appointed, undermines judicial independence and politicizes the courts.