William Rehnquist,
Butler v. McKellar — Opinion of the Court
“ Long before Roberson, this Court recognized the presumptively coercive nature of custodial interrogations and held that an interrogation must cease if and when a suspect requests an attorney. "If the interrogation continues without the presence of an attorney and a statement is taken, a heavy burden rests upon the government to demonstrate that the defendant knowingly and intelligently waived his privilege against self-incrimination and his right to retained or appointed counsel." ”
