I think it is important to distinguish between the Dickerson and Miranda cases. Miranda was a state case, Dickerson was a Federal case. Congress enacted §3501 as a federal statute that in a nutshell addresses the “voluntariness” of a suspects statements, whether they were Mirandized or not. The Dickerson decision, which reversed a lower court’s decision, has caused much debate in the legal and academia communities as to whether the Supreme Court decided correctly. Many argue that Miranda was not constitutional based, but judicial common law, and §3501provides as much, or more protection to the accused. Those opposed to the Court’s decision in Dickerson content that because of the possible Miranda violation technicalities, more bad guys will