President Trump's top Cabinet officials overseeing national security are expected back on Capitol Hill on Tuesday as questions mount over the swift escalation of U.S. military force and deadly boat strikes in international waters near Venezuela. Defense Secretary Pete Hegseth, Secretary of State Marco Rubio and others are set to brief members of the House and the Senate amid congressional investigations into a military strike in September that killed two survivors of an initial attack on a boat allegedly carrying cocaine in the Caribbean. Lawmakers have been examining the Sept. 2 attack as they sift through the rationale for a broader U.S. military buildup in the region that increasingly appears pointed at Venezuela. On the eve of the briefings, the U.S. military said late Monday it attacked three more boats believed to have been smuggling drugs in the eastern Pacific Ocean, killing eight people.