I've heard that these "Jeannies in a bottle" have quite a crude sense of humour and like to interpret wishes literally... ;-)) The rich, brave and wise president would probably retire from the thankless office at the same moment. The return of an already lost person could expose dear and priceless memories as distorted and the view into the future... Well, that could reveal any number of horrors.

So: genie or no genie: work on your wishes! The realistic part will come true and the rest will serve as your motivation. Good luck!