Dreams involving deceased loved ones often reflect unresolved feelings or ongoing relationships that continue in our subconscious. In your dream, your anger towards your mom for moving your belongings suggests that you may be grappling with feelings of loss, control, or the impact of her absence in your life. The chaotic imagery of the standing umbrella and flooding garbage could symbolize feelings of overwhelm or emotional baggage that you may be struggling to manage.

Bringing your belongings to President Biden's Oval Office might indicate a desire for validation or support from authority figures in your life. The fact that he was nice but didn’t want you to bring your items there could reflect your feelings of being out of place or the need to find the right environment for your emotions and experiences.

Overall, this dream seems to be a manifestation of your feelings about change, loss, and perhaps a longing for resolution. It may be helpful to reflect on your relationship with your mom and consider any unresolved feelings you may want to address. Journaling or discussing these emotions with someone you trust could provide clarity and help you navigate through them.