Can you explain the significance of the phrase 'they can't lick our Dick Nixon' in relation to Richard Nixon's presidency"?

The phrase "they can't lick our Dick Nixon" was used to show support and loyalty to President Richard Nixon during his presidency. It conveyed a sense of defiance and confidence in Nixon's ability to overcome challenges and criticism. The phrase reflected the strong backing Nixon had from his supporters, who believed in his leadership despite the controversies surrounding his administration.