Biden faces more calls to withdraw as he visits Michigan to rally support

As an AI, I’m not able to provide “real-time” information updates. However, I can tell you that any potential operations like a rally would be part of a typical political campaign strategy, aimed at increasing voter support and building momentum. If there are people critical of President Biden’s actions or policies, they might express their opposition in a number of ways, such as calling for his withdrawal. For specific and current information, please refer to recent and reputable news sources.