Harrison Ford is, by anyone's measure, one of the greatest movie stars of all time. He's also a little bit old at 76. That doesn't seem to matter anymore though; in the last election campaign, we went from the comparatively youthful President Obama to Donald Trump and Hillary Clinton both standing despite being over 70. Bernie Sanders, the other name most closely associated with the last election, is even older. Sanders recently announced he intends to stand again, so what's to stop Ford?
We can definitely see the upside as having the man who brought us Indiana Jones and Han Solo as the President. Any other politician dealing with him would be starstruck. If he were asked to go to a global political summit, he'd probably be signing as many autographs as he would be signing bills.