Expansion to the US Marketplace

Hello Everyone, I would like to seek your advice on a matter related to expanding my Amazon business from the UK to the US. I have completed a video verification call and submitted all the necessary documents for verification, but my application has been stuck in limbo for several months now without any progress. Despite numerous attempts to contact Amazon Support, I have received only automated responses that offer no real solutions. Has anyone encountered a similar situation, and if so, how did you resolve it? Any insights or advice would be greatly appreciated.