Possible Clues:

• 'Amen!'
• I completely agree yob briefly goes to America to one college
• "Amen to that!"
• It was not I who made that remark, I agree
• "That's exactly right!"
• America and African dictator brought into play after revolution, certainly!
• Amen to that!
• I completely agree with what's declared after hearing one of the flock lost the head with comedian
• "Amen!"
• 'Right on!'