It makes perfect sense though. Here you have two gentlemen who have reached the pinnicle in their Proffession, one being the President of the USA and the other being one of the longest serving Senators in the history of the USA. And yes, they also both happen to come from extremly wealthy and powerful families dating back to the beginning of the 20th century, if not further. Despite their differences in political viewpoints, they can relate to each other as almost none other can.