One hundred envelopes containing "mysterious white powder" were mailed to Donald Trump, Supreme Court Justice Clarence Thomas, and numerous conservative lawmakers and officials from Kansas.
Following this discovery, the ballots were audited by the Michigan secretary of state's office, with the findings accessible only through a Freedom of Information Act (FOIA) request.
The study, titled "Using deep learning to predict ideology from facial photographs: expressions, beauty, and extra-facial information," was published in Scientific Reports.
