https://www.justice.gov/archives/jm/criminal-resource-manual-923-18-usc-371-conspiracy-defraud-us
Additional links in 4110
https://www.nbcnews.com/news/us-news/fbi-agrees-cia-assessment-russia-wanted-help-trump-n697066
https://www.justice.gov/archives/jm/criminal-resource-manual-910-knowingly-and-willfully
https://uscode.house.gov/view.xhtml?path=/prelim@title18/part1/chapter115&edition=prelim