Who picks the grand jury in court cases?

Potential jurors for grand jury cases are chosen randomly by an automated jury pool of registered voters and citizens with driver's licenses in the judicial district, according to the U.S. Courts. Summoned jurors are questioned by judges and attorneys to determine suitability to serve on the grand jury.

The final process of selecting jurors is called voir dire. Prior to final selection, chosen jurors complete questionnaires to determine eligibility to serve on the jury, and the court randomly selects those to be summoned, according to the U.S. Courts. The random selection process was designed to ensure a representation of community members in regards to age, national origin, gender, race or political affiliation, according to the U.S. Courts.