President continues to ridicule housing fines (9)

I believe the answer is:

jefferson

'president' is the definition.
(I know that Jefferson is a president)

'continues to ridicule housing fines' is the wordplay.
'continues to ridicule' becomes 'jeers on' (keeps on ridiculing or jeering).
'housing' indicates putting letters inside.
'fines' becomes 'ff' (an abbreviation for fine written twice).
'jeerson' enclosing 'ff' is 'JEFFERSON'.

(Another definition for jefferson that I've seen is " Thomas -, third US president".)

I've seen this clue in The Guardian.

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