Yes, that would be illegal if Bush knew that when he sold, and it was not public knowledge, despite any subsequent stock price recovery after the interim dip. That would be a classic insider trade. A more cautious man would have sold coincident with the 10Q. But is there any evidence Bush knew?
Of course, the public has generally shown a remarkable lack of interest in listening to political posturing from the dissenting side in recent years. Reagan was the teflon President. Conservatives (like me and like most of us here, I would imagine) were frustrated constantly that the public kept giving Clinton a pass.
I think the Democrats are going to find the same lack of traction.