Possible Clues:

• American seal, say, before assembly
• Political convention activity
• Copper hosting a coppers' closed meeting
• Small group in political party making plans, policies etc
• Small group, as lost in mountains
• You see you get the accountants around for a closed meeting
• Political gathering to select a candidate, US-style
• Party meeting soundly shut us up
• Small group’s endless reason to tour capitals
• Small group with unfinished purpose infiltrated by copper