The Trump-era DOJ’s decision to allow the T-Mobile/Sprint merger will go down as one of the worst merger-enforcement mistakes in decades. This merger will be responsible for transferring billions of dollars in wealth from average Americans to the T-Mobile/Sprint shareholders. To guard against repeating the mistake of T-Mobile/Sprint, we need a strengthened structural presumption, one that statutorily instructs flipping the burden of persuasion to defendants and requires “clear and convincing evidence” to be rebutted.