Awhile back, we had a contest on this blog involving identification of someone in a photo. Let's try another contest. At one time, Jerry Brown had to curb his enthusiasm for the man shown in the picture here. Who is that man and what problem did Jerry Brown have with him? The first person to answer correctly will win our undying admiration.
Send answers to firstname.lastname@example.org.
Here is a hint that may help or confuse. There is another hint in the text above: