The U.S. is not preparing to utilize additional military force in Venezuela, but won't hesitate to employ such force in the event of an "imminent threat," according to Secretary of State Marco Rubio. "The president does reserve the option in self-defense to eliminate that threat," Rubio said. "There is no war against Venezuela, and we did not occupy a country," Rubio said in his prepared remarks. SEN TIM KAINE: TRUMP'S VENEZUELA STRIKE TRAMPLED CONGRESS' WAR POWERS. CLICK HERE TO DOWNLOAD THE FOX NEWS APPThe Trump administration has so far backed Maduro’s vice president, Delcy Rodríguez, to lead Venezuela’s interim government.