A talking point used by most, if not all, of them
Hillary Clinton said 'I don't recall' 21 times out of 25 ...Your browser indicates if you've visited this linkFreeRepublic thread on this subject:Hillary Clinton used variations of 'I don't recall' 21 out of 25 times when answering questions about private email server in court filing.
"I Don'T Recall" (The Clintons Commit Perjury With Impunity ...Your browser indicates if you've visited this linkHereWith variations of "I don't have a memory" and "my best memory, and avoiding the more obvious "I don't recall" and "my best recollection," KnowNothing reprised the Ruffian standard used during the clinton years to commit perjury without penalty.
CAUTION: Mia T! Fom 2006, 12 years ago.
when ever somebody says "I don't remember." you say "Then it COULD HAVE HAPPENED... RIGHT???" or didn't as the case may be and FORCE them on record to answer one way or the other for use against them later