Crossword Genius

Subject to no charges (4,4,5)

Ross

I believe the answer is:

free from blame

I'm a little stuck... Click here to teach me more about this clue!

'charges' is the definition.
I know nothing about this answer so I can't tell whether this works.

'subject to no' is the wordplay.
I cannot really understand how this works, but
'subject' could be 'ee' (EE is an example) and 'ee' is located in the answer.
'no' could be 'o' (O resembles 0) and 'o' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Globe and Mail.
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