COMMENT Dr Mahathir Mohamad has problems leaving bad enough alone.

It was bad enough when he earlier this week told the ongoing Sabah royal commission of inquiry that he did not know anything about illegal residents being given citizenship on dubious grounds.

Perhaps sensing that the disclaimer was incredible even by the low standards of his perception of public gullibility, he must have felt he should retrieve matters somewhat the next day.

Instead, he made things worse through shunting responsibility for the issue onto Anwar Ibrahim whose turn on the witness stand comes next Thursday...