After finishing a lengthy stint in office, many American politicans make money through speaking engagements.
For more prominent public figures, these can prove highly lucrative, according to research conducted by ABC News. Take Donald Trump for example. The billionaire earned an incredible $1.5 million for each of his 17 speeches at The Learning Annex's "real estate wealth expos" in 2006 and 2007 - he was contracted to speak for just one hour! Ben Bernanke makes up to $400,000 per speaking engagement while Bill or Hillary Clinton could cost $200,000.
This chart shows the highest speaking fees among selected public figures in the United States.
You will find more statistics at Statista