Whether the Constitution permits a prosecutor to knowingly use false or misleading testimony, as long as it does not constitute perjurious testimony

QUESTION PRESENTED Under the Fourteenth Amendment, prosecutors may not knowingly secure convictions using false or misleading evidence. This Court has never limited the scope of false or misleading evidence to perjurious testimony and has invalidated convictions where the testimony was not shown to have been perjured. The question presented is whether the Constitution permits a prosecutor to knowingly use false or misleading testimony, as long as it does not constitute perjurious testimony. 1