>For example, just weeks ago highly placed senators were discovered to have conducted insider trading on the back of security briefings on the coronavirus pandemic

What did they know that wasn't already in the public eye? Banks were making their projects just like everyone else and nobody KNEW what was going to happen. Insider trading has a real legal definition, there was nothing in that briefing that could constitute insider trading because there was no information revealed there, just speculation that was already captured by public sources.