Yeah, in Cheek v. United States it was found that (in an exception to the normal rule) ignorance of the law is a valid defense in criminal tax cases due to the

Yeah, in Cheek v. United States it was found that (in an exception to the normal rule) ignorance of the law is a valid defense in criminal tax cases due to the complexity of tax law. https://en.wikipedia.org/wiki/Cheek_v._United_States https://en.wikipedia.org/wiki/Cheek_v._United_States https://www.irs.gov/pub/irs-wd/0947055.pdf https://www.irs.gov/pub/irs-wd/0947055.pdf