That happened at my university, though not to someone affiliated with the university. He was trying to break up a fight. He had a gun and it fell out its holster. He was grabbing for it as campus police were shouting not to. They shot and killed him. While you can argue about whether the police response and training was appropriate, one thing is definitely true. If he had not had a gun on him that day, he would not have been killed. A country awash in guns is not a better country, despite what the “a well armed society is a polite society” people claim.

Okay, what requires more assumptions:

Biden goes along with a hair brained Trump era plan with a nebulous link to the Trump administration. News media sources have found no link to any official agency, but fortunately we have social media to discover a link (based on nothing). Biden then goes on to prosecute the perpetrators for weapons smuggling. None of the perpetrators complains about a deal being broken.

OR

This only had links to political figures in the Trump administration, but not anyone in the intelligence services. Those figures are long gone. No one bothered to tell Biden on the way out the door. Biden is prosecuting the perpetrators of an operation he allowed for fun and they’re happy to stay quiet while they get imprisoned for running weapons.

All it said is that this group that was not part of the US government was in touch with someone in the Trump administration. That could be literally anyone, likely some Trump sycophant. The Trump administration leaves, attempts a coup on the US presidency on the way out, and now whoever was in contact is probably gone. Then the incoming Biden administration doesn’t even know this bullshit is going on, let alone who’s supposed to be contacted to call this thing quits. Now that same administration is prosecuting them for running weapons.

I’m well aware of the history of covert CIA involvement in Latin America, at least in broad strokes. But you’re still making assumptions to get to “why didn’t Biden immediately shut this down?” Just apply Occam’s Razor, he couldn’t shut it down because the Trump administration used unofficial side channels.

The article makes no mention of the CIA. The plotters were not only non-governmental but also violated US law (not that the CIA hasn’t done that before). They were in contact with the “Trump administration,” but that could be anyone. Given Trump’s distrust of the intelligence services, I suspect any operations would have side stepped them.