Does the exclusion of relevant evidence of an alternative perpetrator based on a trial court's conclusion it is too speculative violate a criminal defendant's constitutional right to present a complete defense?

QUESTION PRESENTED Does the exclusion of relevant evidence of an alternative perpetrator based on a trial court’s conclusion it is too speculative violate a criminal defendant’s constitutional right to present a complete defense? ii LIST OF PROCEEDINGS U.S. Court of Appeals for the Eighth Circuit No. 22-2178 United States of America, Plaintiff-Appellee, v. Joshua James Duggar, Date of Final Opinion: August 7, 2023 Date of Rehearing Denial: September 28, 2023 U.S. District Court, Western District of Arkansas No. 5:21-CR-50014 United States of America, Plaintiff, v. Joshua James Duggar, Defendant. Date of Final Judgment: May 27, 2022