One beating US police will cover up close to bar (5)
I believe the answer is:
heart
'one beating us' is the definition.
The definition and answer can be both locations as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'police will cover up close to bar' is the wordplay.
'police will' becomes 'heat' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'cover up' is an insertion indicator.
'close to' indicates one should take the final letters (the 'close' to the word).
The final letter of 'bar' is 'r'.
'heat' placed around 'r' is 'HEART'.
Can you help me to learn more?
(Other definitions for heart that I've seen before include "Body organ" , "It's in the chest" , "Muscular organ - compassion" , "one in suit" , "Player for Scottish team" .)