Tony La Viña did his due diligence.

Before agreeing to become Senator Loren Legarda’s spokesperson and join her legal team, he said he spent weeks studying documents, reviewing media reports, examining photographs, consulting colleagues and experts, and thinking carefully about whether he should take on the role.

He then challenged others to exercise the same rigor.

“Is it too much to ask the DOE officials, OMB lawyers, media people, etc. to do the same?”

It is a fair challenge.

Anyone making serious accusations against public officials should do his homework. Investigators should. Journalists should. Lawyers should. And certainly, spokespersons should.

But due diligence is a process. It is not a verdict.

And now that La Viña’s arguments have become the centerpiece of the formal public defense of Legarda and her son, Batangas Representative Leandro Legarda Leviste, it is worth subjecting those arguments to the same standard he demands of everyone else.

The press release is categorical. Politics, not evidence, it says, is driving the case. After an “intensive review,” La Viña says he is convinced that Legarda and her son have “absolutely not done anything illegal and even improper” in relation to Leviste’s solar energy business.

Perhaps.

But there is a simpler test for any defense: Does the answer actually answer the allegation?

That question matters because political controversies have a peculiar way of producing arguments that may be perfectly true but nevertheless prove something other than what they are supposed to prove.

Take Legarda’s environmental record.

There is no question that she has accumulated decades of environmental and climate advocacy and legislation. That record is relevant to understanding who Loren Legarda is.

But it cannot establish whether she did or did not intervene improperly on behalf of her son’s business in a particular instance.

A distinguished environmental record establishes a distinguished environmental record.

It does not establish innocence regarding a separate allegation.

The same analytical problem appears in the argument about corporate ownership.

La Viña stresses that Legarda “does not own, run, or take part” in Solar Para sa Bayan Corporation or any Solar Philippines company. He says there are no corporate documents identifying her as shareholder, officer or beneficiary.

Those are important facts.

If someone is accusing Legarda of secretly owning her son’s companies, produce the corporate records and settle the matter.

But if the allegation is instead that a powerful senator used public office or political influence to advantage a family member’s business, proving that she did not own shares in the company does not necessarily answer it.

Ownership and influence are different questions.

That doesn’t mean influence occurred.

It means absence of ownership cannot by itself prove that it didn’t.

La Viña makes another argument worth considering. The Solar Para sa Bayan franchise, he says, was non-exclusive, involved no government subsidy, and was never sold. He also argues that Senator Legarda did not vote for its passage and that implementation was frustrated partly because the Department of Energy failed to issue implementing rules and identify areas where the franchise could operate.

These are not peripheral details. They are factual claims capable of verification.

And this is precisely where the controversy should be fought.

Was the franchise exclusive or wasn’t it?

What privileges did it actually confer?

What role, if any, did Legarda play in securing it?

What did the law require?

What did the government approve?

What obligations followed?

What was delivered?

These questions cannot be answered by reputation, insinuation or political affiliation. They require documents.

The defense of Leviste creates a similar problem.

La Viña describes him as an innovative, out-of-the-box entrepreneur whose unsuccessful ideas should not be criminalized. “He should be praised, not punished,” the statement says.

Maybe he was innovative.

But again: Is that the question?

Entrepreneurial innovation does not establish that government privileges were properly obtained. A failed business model does not establish that they were improperly obtained either.

Business success proves neither innocence nor guilt.

Profit is not corruption.

Failure is not criminality.

Innovation is not immunity.

Each proposition must stand on its own.

This is why the most powerful argument La Viña makes may also be the one that most clearly demonstrates the problem.

He says scrutiny intensified only after Leviste began publicly exposing corruption in late 2025.

“The timing speaks for itself,” he says.

He calls what followed “classic lawfare” and ultimately concludes that what is happening is “clearly political persecution.”

But timing does not speak for itself.

People make timing speak.

If investigations intensified after Leviste began attacking corruption, that sequence legitimately raises the possibility of retaliation. It deserves examination.

But sequence is not causation.

And even if political retaliation were eventually established, another distinction would remain necessary.

Why an investigation was pursued and whether the allegations being investigated have merit are two different questions.

A politically motivated investigation could uncover actual wrongdoing.

A perfectly legitimate investigation could ultimately uncover none.

Motive does not prove the allegation.

But neither does motive disprove it.

That distinction becomes particularly important because La Viña simultaneously objects to what he considers premature judgment by the Ombudsman.

He correctly emphasizes that the matter remains at the preliminary investigation stage and argues that public pronouncements by the Ombudsman create the impression that liability has already been assumed.

That concern deserves to be taken seriously.

The reputational power of the state is enormous. An investigation can become punishment long before a case reaches court. Government officials therefore have a responsibility to distinguish accusation from evidence, investigation from prosecution, and prosecution from guilt.

But surely the discipline must operate in both directions.

If it is premature for government investigators to communicate as though liability has already been established, isn’t it also premature for the defense to declare categorically that the investigation is “clearly political persecution”?

The Ombudsman should not presume guilt.

Legarda’s defenders should not presume persecution.

Both propositions can be true.

And perhaps this is where La Viña’s own reputation becomes relevant although not in the way his defenders might expect.

Tony La Viña has accumulated considerable moral and professional credibility over decades of work in human rights, environmental law, climate justice, academia and public service.

That matters.

Reputation gives weight to a person’s voice. It tells us that someone has earned the privilege of being taken seriously.

But reputational capital cannot become evidentiary capital.

A lifetime of principled positions cannot prove that one’s present position is correct.

Just as Loren Legarda’s environmental record cannot settle a specific allegation against her, Tony La Viña’s record cannot settle the argument he is making on her behalf.

And there is another important change that should not be ignored.

La Viña is no longer merely an academic or public intellectual examining this controversy from outside.

He has chosen to become Legarda’s spokesperson and part of her legal team.

There is absolutely nothing improper about that.

But he is now an advocate.

That does not make his arguments false. It means his arguments should be evaluated as arguments, independently of the credibility of the person making them.

Which brings us back to due diligence.

Real due diligence should make everyone uncomfortable, including the person doing it.

It should force us to test not only the evidence supporting our position but also the strongest evidence against it. It should make us distinguish what we know from what we infer, and what we infer from what we merely suspect.

And most importantly, it should force us to answer the question actually being asked.

If the allegation concerns improper influence, answer the evidence of influence.

If it concerns the franchise, establish what the franchise actually granted.

If it concerns government obligations or regulatory privileges, produce the records.

If the accusation is political persecution, demonstrate the political intervention.

And if government officials have made claims unsupported by documents or law, expose them.

The same standard should apply to everyone.

This is not an argument that Loren Legarda or Leandro Leviste is guilty.

It is precisely the opposite.

At the preliminary investigation stage, guilt has not been established.

Neither has innocence.

And political persecution has not been established merely because someone believes the chronology points in that direction.

That is why the most useful question in this controversy may be the simplest one.

Every time someone presents an impressive résumé, invokes political motive, points to family relationships, celebrates entrepreneurial innovation, cites enormous profits, or recounts decades of public service, ask:

What exactly is the allegation?

Then ask:

Does this evidence actually answer it?

Because sometimes the most persuasive argument in politics is also the most distracting.

It may even be completely true.

It just wasn’t the question.