Wis. Stat. § 756.02
Every resident of the area served by a circuit court who is at least 18 years of age, a U.S. citizen and able to understand the English language is qualified to serve as a juror in that circuit unless that resident has been convicted of a felony and has not had his or her civil rights restored.
Wis. Stat. § 756.02
An ability to understand the English language is necessary in order to satisfy the statutory requirements of ss. 756.02 and 756.04. If a juror cannot meet the statutory requirements, then the entire trial process may be nothing more than an "exercise in futility." A defendant was prejudiced when a juror was allowed to serve who was not qualified under the statutes and did not have a sufficient understanding of English to meaningfully participate in the trial process. State v. Carlson, 2003 WI 40, 261 Wis. 2d 97, 661 N.W.2d 51, 01-1136. That a father and son had the same first and last names, middle initial, phone number, and address, the jury summons did not include any specific identifying information, and the son appeared and served on the jury when the summons was intended for the father, did not make the son an improper juror. State v. Turner, 2013 WI App 23, 346 Wis. 2d 229, 827 N.W.2d 654, 12-0297.