Fare from Mexico is wrong — I'm going to America (8)
I believe the answer is:
tortilla
'fare from mexico' is the definition.
'tortilla' can be an answer for 'fare' (tortilla is a kind of food). I'm unsure of the 'from mexico' bit.
'wrong i'm going to america' is the wordplay.
'wrong' becomes 'tort' (a civil wrong in law).
'i'm going to' becomes 'I'll' ('I'm going to' can mean 'I will' or 'I'll').
'america' becomes 'a' (common abbreviation eg in USA).
'tort'+'ill'+'a'='TORTILLA'
'is' is the link.
Can you help me to learn more?
(Other definitions for tortilla that I've seen before include "Mexican corn-meal pancake" , "Mexican maize pancake" , "Mexican corn meal pancake" , "Mexican 7 across" , "Littoral (anag.)" .)