Steven Shapiro, legal director of the ACLU, stated on similar lines in the Wall Street Journal online edition, that Berghuis "seriously undermines" Miranda, in which the court had "recognized that a suspect in police custody can be worn down by prolonged questioning and other interrogation tactics" [REF].
UC Berkeley law professor John Yoo responded in a matching article in the same publication, that the court's view provides interpretive guidance when a suspect says nothing for an extended period.