Every defendant has what the US Supreme Court is now calling a right to present a defense. This right, in general, is the right to present favorable evidence in your trial if it is reliable and other rules, such as evidence rules, might otherwise prevent it from being presented to the jury. I have used this legal theory in a serious jury trial to have hearsay evidence admitted that otherwise would have been excluded. It was also used to try to have evidence admitted that a third party committed the crime, and not my client. Because it was not admitted in the trial, the case was reversed on appeal and my client is now due to have his case retried.