Penn Wharton Budget Model

The provided news articles focus on the legal battles surrounding tariffs imposed during the Trump administration. They detail rulings by a federal judge and the Supreme Court that deemed certain tariffs illegal, leading to the cessation of their collection and the requirement for refunds to affected companies. The articles do not contain any information about the Penn Wharton Budget Model. Therefore, it's impossible to provide a summary about the organization based solely on the provided text. The articles highlight the ongoing legal and economic consequences of the Trump administration's trade policies and the efforts to rectify the situation through court rulings and refund processes.