[Fat Charlie]

Congresscritters buying and selling stocks based on what they know about their committee business is the scumminess that we expect, and get, from the swamp. They're the only ones who can make it illegal, and they won't.
I'm not looking at the insider trading, as such. I'm asking what duty the chair- the ranking member of the majority party, which also happens to be the party in the White House, has to the country.

The most decisive action Washington took in February was... to sell stock. While telling everyone that there was nothing wrong. And then belatedly warning donors.

Burr's oversight functions allowed (required) him to see exactly what was going on. And he didn't use those powers to push the Executive to change its tune or even brief the wider Senate. The only people he warned were political donors from his home state- and he only warned them the day his financial disclosure was required to be filed. Apparently one of those donors has an intern watching things like that, and Burr knows it.