American ideas oddly ignored gathering information for programme (6)
I believe the answer is:
agenda
'programme' is the definition.
(agenda is a kind of programme)
'american ideas oddly ignored gathering information' is the wordplay.
'american' becomes 'a' (common abbreviation - e.g. in organisation names).
'oddly ignored' indicates alternate letters (letters in odd-numbered positions removed).
'gathering' means one lot of letters goes inside another (gather can mean to acquire or bring in).
'information' becomes 'gen' (gen can informally mean information).
The alternate letters of 'ideas' are 'da'.
'a'+'da'='ada'
'ada' going around 'gen' is 'AGENDA'.
'for' is the link.
(Other definitions for agenda that I've seen before include "Table of business" , "things to discuss" , "Something perhaps hidden" , "Business to be transacted" , "Items of business for committee meeting" .)