Nothing; so it raises the question, when the BBC news reports "insider trading suspicions looming over Trump's presidency", are they deliberately ignoring insider trading suspicions looming over a bunch of other high-ranking US politicians?
Pelosi got a free Presidential jet and scooped the inside trades on Iran?
Trump set a stratosphereic high bar for examples par excellence, I doubt all of Pelosi's husband trades add up to a signifigant fraction of Trump's crypto gains alone.
They sure have - see Chris Joseph's comments, the developer of the Pelosi stock tracker app, about having numerous examples from both sides of the aisles of numerous congress members who have traded more and had better returns.
Irrelevant to the matter of scale - Trump's corruption easily exceeds that of Pelosi.
More to the point, this is simple what-about-ism to avoid facing up to corruption in the US government and the poressing need (for many decades now) to take effective action.
As it stands, the emoluments clause and the impeachment wrist slapping make the US a standing joke for poor definition of problem and inability to punish.
So it's worthwhile to note that both major political parties believe this is acceptable.