ADVOCATE
1: one who pleads the cause of another;
​​2: one who defends or maintains a cause or proposal
​​​​​​​
​​​​3: one who supports or promotes the interests of a cause or group
https://www.merriam-webster.com/dictionary/advocate
Rudi Gresham and the Reagans
Rudi Gresham and President George W. Bush
Rudi Gresham and President George H. Bush
Rudi Gresham and President Ronald Reagan
Rudi Gresham and President George W. Bush
Rudi Gresham and President Ronald Reagan