US city last up for rebuilding (2,4)
I believe the answer is:
st paul
'us city' is the definition.
'St. Paul' can be an answer for 'city' (St. Paul is an example). I am not certain of the 'us' bit.
'last up for rebuilding' is the wordplay.
'last up' can be anagrammed to 'ST PAUL'.
However, I am not sure how this is indicated.
Can you help me to learn more?
(Other definitions for st paul that I've seen before include "Saul after his conversion" , "He wrote letters to the Corintians and others" , "He wrote letters to the Corinthian and others" , "The first great Christian missionary" , "One of the twelve apostles" .)