Amos refuses to answer because he has been traumatized because his Hero lost the election and his subconcious mind is blocking the memory.

Freud:
The Beginning

"Sigmund Freud more-or-less started the whole issue about repressed memories when his clinical case studies in the late nineteenth century inspired him to develop his psychological theories Sigmund Freud about the nature of unconscious mental processes. He used the term repression to describe the way emotionally painful events could be blocked out of conscious awareness so that their painful effects would not have to be experienced.

Note that this repression process is a completely automatic psychological defense against emotional trauma and does not involve conscious intent. In contrast, deliberately pushing something out of awareness because you want to avoid any responsibility for it is called suppression.

Freud's theories all came together in his technique and philosophy of psychoanalysis, and repression has been a key concept within that philosophy ever since."

Freud