https://law.justia.com/cases/federal/appellate-courts/F2/93/383/1542868/
1937 case on voter fraud
In the second charge, the judge said, among other things, "In this inquiry I warn you that those who violate election laws constitute a most dangerous foe, whether they be in Kansas City or elsewhere, or whether they be of one political party or another political party, they constitute a most dangerous foe. * * * The ballot box offender is a dangerous offender, and being a dangerous offender, resorts to the methods employed by other criminals who interfere with investigations by the Grand Jury. I warn you men that ordinary criminals do not appoach bluntly and abruptly in order to stop any inquiries concerning their conduct, but they work by indirection."