The following excerpt is from Castellon v. Whitley, 976 F.2d 736 (9th Cir. 1992):
A criminal defendant has a constitutional right to an interpreter when his "fluency in English is so impaired that it interferes with his right to confrontation or his capacity, as a witness, to understand or respond to questions ..." United States v. Lim, 794 F.2d 469, 470 (9th Cir.1986). We must therefore determine whether, despite the fact that appellant was required to share an interpreter, he nevertheless received adequate translation to preserve his constitutional rights.
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