MEXICO CITY — Andrés Manuel López Obrador won over Mexican voters by promising a different kind of presidency, making sometimes theatrical pledges that many wondered how he would fulfill.

Five days into his presidency, he’s holding daily news conferences to report on the status of his agenda, making updates that some Mexicans find hopeful and others worrying. His daily briefings mark a radical change from the previous, more tight-lipped administration.

Since taking office on Saturday, some of his most unusual ideas have already been enacted. The former presidential mansion is now open to the public (and the new Alfonso Cuarón film will soon be projected on its walls). The presidential airplane has been taken to California, where the Mexican government will attempt to sell it in a show of austerity. López Obrador is getting around in an old Volkswagen rather than a glitzy motorcade.

Now, beyond the symbolic gestures, López Obrador is preparing to tackle some of Mexico’s biggest policy challenges. Next week, he said, he will announce a proposal to undo predecessor Enrique Peña Nieto’s education overhaul, though he has released few details, aside from claiming that it was developed “with the consensus of teachers.” In the coming days, López Obrador said, he will speak to President Trump about migration.

On Monday, López Obrador ordered a “truth commission” to investigate the disappearance of 43 students in Ayotzinapa in 2014. Security forces have been implicated in the incident, and López Obrador’s effort to shed light on what happened has given hope to some of the parents of the disappeared, even as it has raised questions about what a new investigation might yield.

On Tuesday, he struggled to convince investors that despite his recent attacks on neoliberalism — and particularly on Mexico’s newly liberalized energy industry — he won’t stand in the way of a free market. He pointed out Monday at his first news conference as president that the markets had gone up during the first day of his term.

"You cannot regulate the market by decree,” he said. “I am in favor of a free market.”

Also Tuesday, López Obrador returned to his stated policy of capping the salaries of public officials, saying at a news conference: “It is dishonest when an official receives up to 600 thousand pesos a month [about $29,000]. That is corruption.”

López Obrador seemed to recognize that some high-level officials are quietly seething at his proposal. Apparently addressing those who might be displeased, he said, “Then there is the private sector.”

El Universal reported Tuesday that almost 3,000 public employees have filed class-action lawsuits against the government over a law mandating that no bureaucrat can earn more than the president. Because López Obrador set his salary at 108 thousand pesos per month (about $5,250), less than half of his predecessor’s salary, the pay of other public servants also has plummeted. According to El Universal, the penalty for government employees caught receiving a higher salary than the president is 14 years in prison.

On Monday, López Obrador’s nominee for foreign minister, Marcelo Ebrard, met with U.S. Homeland Security Secretary Kirstjen Nielsen in Washington. They had been expected to discuss a plan that would force asylum seekers to remain in Mexico while their claims are processed in the United States. But Ebrard called the meeting a “courtesy visit,” and no deal was announced or alluded to.

On Wednesday at his daily news conference, López Obrador announced that he will push for new oil drilling sites in the southern state of Campeche.

“We need to extract oil. Production is falling. In a few days, we will start drilling new oil wells,” he said.

But at the same news conference, he also put private companies that had received recent oil contracts on notice, saying he would be watching their performance closely before deciding whether to continue the contracts, injecting uncertainty into his energy policy, which has already unnerved many in the industry.

“From their results, we will make the decision. Our commitment is to give a period of three years for results,” López Obrador said.