Former President Carter and President Clinton gave control of the Panama Canal to the Chinese in 1999.
http://www.latinamericanstudies.org/canal/prepares.htm
http://eagleforum.org/psr/1999/nov99/psrnov99.html
Seriously? The USSS uses whatever they need to in order to complete the mission. The would use a dump truck if they needed to.
Bobby is a real jerk.