While that's a great point and a likely defense, the play is more often than not to charge you with lying (and scare you with the max jail time threat) to then

While that's a great point and a likely defense, the play is more often than not to charge you with lying (and scare you with the max jail time threat) to then coerce you to be an informant or work with them in some other way. We essentially have state-sanctioned black mail.