The phrase in question describes a visual scenario involving a former U.S. president and a microphone. It suggests a particularly close, perhaps exaggerated, interaction between the individual and the speaking device. One could interpret this to mean aggressive use of a microphone by the individual.
The potential significance of this imagery stems from its capacity to symbolize power, dominance, or even aggression. The historical context is rooted in the individual’s well-documented, often theatrical, public speaking style. Such imagery may be perceived by some as either a demonstration of strength or an indication of disrespect for the office and the audience. The perceived benefit, if any, lies in the potential to galvanize support among certain segments of the population who respond positively to displays of assertive behavior.