Final answer:
Speaker 3 is most likely reacting to Watergate.
Step-by-step explanation:
In this question, Speaker 3 is most likely reacting to Watergate. Watergate refers to the political scandal that occurred in the 1970s, involving the illegal activities of the Nixon administration. Speaker 3's statement reflects a negative view towards American politicians, suggesting that they are corrupt and more focused on their own interests than serving the people. This aligns with the general sentiment during the Watergate scandal, where public trust in politicians was shaken.
Learn more about Watergate scandal