Better than America looking back, group embracing success (10)
I believe the answer is:
surpassing
'better' is the definition.
(thesaurus)
'embracing success' is the wordplay.
'embracing' becomes 'sur' (I can't explain this - if you can you should give a lot more credence to this answer).
'success' becomes 'passing' (passing is a kind of success).
'sur'+'passing'='SURPASSING'
'than america looking back group' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Another definition for surpassing that I've seen is " Being better than".)