CA Anon. You want to know what stops illegal aliens from being impanelled on juries?
Self-reporting.
Did 449,000 Californians Turn Down Jury Duty Because They Are Undocumented Immigrants?
Unproven
Los Angeles Superior Court, for example, excused a total of 208,149 jurors in fiscal year 2017-2018.
In San Diego County, the stateโs second-largest court, 32,290 people were specifically removed from the juror pool between 1 January 2018 and 11 December 2018 for not being U.S. citizens. But that figure represented just 29 percent of the 109,548 total people disqualified from the jury pool during that periodโฆ
https://www.snopes.com/fact-check/449000-californians-jury-duty/
When Snopes can't even back up their bullshit, you know there's a problem.