Whether venue is only a jurisdictional concept rather than essential element of an offense that must be proved beyond a reasonable doubt

QUESTION(S) PRESENTED 1. Whether venue is only a jurisdictional concept rather than essential element of an offense that must be proved beyond a reasonable doubt; 2. Whether an appellate Court can Sua Sponte exercise its judicial authority power to review an improper venue issue (venue. issue) not preserved by an objection at the District Court and that was not raised in an appellant brief. 2 .