Artless politician getting into a pack of lies (6)
I believe the answer is:
simple
'artless' is the definition.
(similar in meaning)
'politician getting into a pack of lies' is the wordplay.
I cannot really understand how this works, but
'politician' could be 'mp' (Member of Parliament) and 'mp' is found in the answer.
an anagram of 'lies' is 'sile' which is within the remaining letters.
No letters remain.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for simple that I've seen before include "Easily done/understood" , "Straightforward, not elaborate" , "Easy; herb" , "Unpretentious" , "Easily understood" .)