Never enough for Hillary and Bubba. And the 21 million does not include the "donations" to the Clinton Crime Foundation occurring at the same time. No need to read the article, just scroll down to the list of speaking fees. https://nypost.com/2016/05/22/how-corporate-america-bought-hillary-clinton-for-21m/
I'd never give up a lifetime Senate seat like Kerry/Sessions etc for a 4 year administration job (or probably 2 years in Sessions case)