Seaside town, resort two men pressure American to visit (6-5-4)
I believe the answer is:
weston-super-mare
'seaside town' is the definition.
'weston super mare' can be an answer for 'town' (I've seen this before). I'm not certain of the 'seaside' bit.
'resort two men pressure american to visit' is the wordplay.
'resort' indicates an anagram (re-sort the letters).
'american' becomes 'a' (common abbreviation - e.g. in organisation names).
'to visit' is an insertion indicator (inserted letters visit others).
'two'+'men'+'pressure'='twomenpressure'
'twomenpressure' with letters rearranged gives 'westonsupermre'.
'westonsupermre' enclosing 'a' is 'WESTON-SUPER-MARE'.
Can you help me to learn more?