The Hill website drew attention to the controversy that dominated US headlines after CBS News revealed documents identified as classified in an office used by US President Joe Biden after he left office as vice president.

Subsequent days brought the discovery of a second batch of documents in his garage.

These revelations have put Biden and the White House on the defensive.

The site indicated that there are a number of unanswered questions, considering five of them are the most important?

Why wasn't the people informed sooner?

The site said that the timeline related to the documents is one of the most ambiguous and politically damaging elements of the controversy, as there was a long period of time that the whole issue remained unknown to the public.

This point was seized upon by the Republicans in the new House of Representatives, who insisted that the American people had a right to know when they were about to vote.

What did Biden know and when did he know it?

The president said he was surprised to learn of more documents and also claims not to know exactly what they contain.

He is sure to face more questions soon about the details.

What's in the documents?

Perhaps this is the biggest question of all, says the site.

Much will depend on the sensitivity of the information contained therein. CNN reported that some of the documents from the office included intelligence and information material on "subjects including Ukraine, Iran and Britain."

This appears to be bad news for Biden.

And if the documents expose him to the accusation of endangering the national security of the United States or allies such as Britain, that would be dangerous.

How broad is the Special Counsel's investigation?

Attorney General Merrick Garland says hiring a special counsel is necessary to reassure Americans about the integrity of the investigation, but presidents hate special counsels for good reason, as they are often given sweeping powers.

Will voters realize the difference between his case and Trump's?

Republicans wasted no time using the Biden affair to try to neutralize Trump's criticism of his behavior regarding documents discovered at his resort.

And the American website concluded that, politically, a lot will depend on whether the White House can convince the American people that Biden or his employees committed an unintended mistake, while Trump was involved in something worse.

Discrimination is critical, but will voters accept it?