In my opinion, Lois, as a dedicated journalist, should point out to Mayson, in a non-threatening way, of course, that it might very well be her duty to expose a corrupt government official in the Daily Planet. Lois was, if you recall, a witness to Mayson's extortion deal with Clark, and again she was witness to Mayson's attempt to prevent Clark from saving the hostages as Superman -- hostages that include the mayor's 10-year-old daughter.
Of course, if Mayson decides that it is in the public welfare not to carry through, Lois would be bound to do nothing. But Lois should make it very clear that if Mayson exposed Clark, the circumstances *would* come out, one way or another.
It all would depend, of course, on whether Mayson's hatred for Superman was greater than her regard for her own career.
Admittedly, that is a brand of extortion, too. But since Mayson isn't above it, I don't see Lois worrying about it, either.
