Spanish man welcoming a tense politician (7)
I believe the answer is:
senator
'politician' is the definition.
(I know that senator is a type of politician)
'spanish man welcoming a tense' is the wordplay.
'spanish man' becomes 'senor' (I've seen this in another clue).
'welcoming' means one lot of letters goes inside another (in sense of 'inviting in').
'tense' becomes 't' (grammatical abbreviation).
'a'+'t'='at'
'senor' placed around 'at' is 'SENATOR'.
(Other definitions for senator that I've seen before include "Roman politician" , "Member of the Upper House of the US Congress" , "US representative" , "politician going wrong" , "Clinton, perhaps" .)