I did a quick google search and came across: https://www.cbsnews.com/news/no-disrespect-in-calling-the-president-mister/ https://www.cbsnews.com/news/no-disres

I did a quick google search and came across: https://www.cbsnews.com/news/no-disrespect-in-calling-the-president-mister/ https://www.cbsnews.com/news/no-disrespect-in-calling-the-pr... Which uses the example of Mr. Obama interestingly