Without a mental illness or defect, a person was held fully responsible for any criminal action not done under duress, defined as a clear and present threat of death or serious injury; securing an acquittal on the basis of brainwashing would be completely unprecedented.
Without a mental illness or defect, a person was held fully responsible for any criminal action not done under duress, defined as a clear and present threat of death or serious injury rather than peer pressure or being a low ranking member of a conspiracy. Securing an acquittal on the basis of brainwashing would be completely unprecedented.