Oh, this ain't good.

What was Pres Trump's justification?

From the cited article ...

... The Department of Justice has widened the scope of President Trump's pardons for Jan. 6 riot defendants to include separate but related gun charges. The charges stemmed from FBI searches executed during the sprawling investigation into the Jan. 6, 2021 attack, which allegedly turned up evidence of other crimes not directly connected to the Capitol breach.

In legal filings this week, federal prosecutors asked judges to dismiss cases against two former Jan. 6 defendants, who had both faced federal gun charges.

This week's legal filings represent a more expansive understanding of Trump's Jan. 6 pardons than was initially clear. Trump's order, which he issued on his first day in office, gave clemency for "offenses related to events that occurred at or near the United States Capitol" on Jan. 6.

Immediately after Trump's pardons " which included defendants who violently assaulted police officers and those with long criminal records " the Department of Justice appeared to stand by the separate gun charges. That was then.
A photo collage of different people charged with violent offenses in the Jan. 6, 2021 riot.
Politics
Trump gave pardons to hundreds of violent Jan. 6 rioters. Here's what they did

In the case against Elias Costianes of Maryland, federal prosecutors alleged he joined the mob that breached the U.S. Capitol on Jan. 6, and took videos of himself inside of the building. Costianes pleaded not guilty to the Jan. 6 charges, and his case was still pending when Trump took office and ordered the dismissal of all ongoing Capitol riot cases. But that was not Costianes' only legal problem. When FBI agents first arrested Costianes and searched his residence on Feb. 12, 2021, they found four guns, along with evidence that Costianes used and sold cocaine and testosterone.

Costianes pleaded guilty to a charge of possession of a firearm or ammunition by an unlawful user of a controlled substance. He was sentenced to a year in prison, which he began serving earlier this month. ...

So, no justification?