...I don't see any logical way that Michael telling Fredo can be reconciled with Michael suspecting Fredo.
That is because there is none...other than for audience benefit as to learning of Michael's plans for Roth, and to include a final 'intimate' scene between the brothers before Fredo's betrayal is confirmed.
A wise and frugal government, which shall leave men free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned - this is the sum of good government.
