Lift rifle angrily chasing President (6)
I believe the answer is:
pilfer
'lift' is the definition.
(synonyms)
'rifle angrily chasing president' is the wordplay.
'angrily' indicates anagramming the letters (I've seen this in other clues).
'chasing' is a charade indicator (letters next to each other).
'president' becomes 'p' (common abbreviation eg in VP).
'rifle' is an anagram of 'ilfer'.
'ilfer' put after 'p' is 'PILFER'.
(Other definitions for pilfer that I've seen before include "Steal small items or quantities" , "Commit minor crime" , "Filch" , "Steal (sl.)" , "twenty-two ball game" .)