Christmas visitor with iron for city in New Mexico (5,2)
I believe the answer is:
santa fe
'city in new mexico' is the definition.
(I've seen this before)
'christmas visitor with iron' is the wordplay.
'christmas visitor' becomes 'santa' (I've seen this in another clue).
'with' is a charade indicator (letters next to each other).
'iron' becomes 'Fe' (Fe is the chemical symbol for iron).
'santa'+'fe'='SANTA FE'
'for' is the link.
(Other definitions for santa fe that I've seen before include "Capital of New Mexico state" , "US state capital" , "Capital city of New Mexico" , "US city" .)