MUST CITE 5 Resources

What limits should there be on insider trading? In the USA, Pete Rose was a popular baseball player, and then manager, who was punished for betting on his own team to win. Should Pete Rose be allowed to profit from betting on the success of a team he managed? Should Pete Rose be punished more harshly if he profited from betting on the failure of a team he managed?
In the Enron case, several managers sold all their Enron stock about an hour before it became public knowledge that the company was not worth as much as everyone thought. Should a manager be punished for acting prudently based on knowledge they have discovered honestly only because the general public does not have that knowledge?
Should managers be required to disclose private information they have that might influence the investment decisions of the public?  Also, address the question of timing about the dissemination of information: is it enough to share information on a public website or should a formal press conference be required?