Most anti-commerce?

Which is more anti-commerce,

* a Saudi national who organizes a flight of two passenger planes into the New York World Trade Center or

* a U.S. Senator running for President who says that we must renegotiate or walk away from a trade agreement we signed more than 15 years ago, which covers $1 trillion in annual trade volume and provides us most favored nation status for oil?

Is it Osama or Obama who is the most serious threat to global commerce?