Technically that's not true. Wishing a president was dead is not treason. Stating that you are going to make it happen is. Although I would not take the chance that those Secret Service guys wouldn't make that distinction. For what it's worth...
Hey S7, why don't you email the former President's office with that comment? That way we won't have to read your ignorance after the Secret Service catch up with you. NOTE: your statement is an act of treason (for those confused of the rules)