The Trump administration is weighing closing the U.S. Embassy in Cuba, which only recently reopened after President Obama moved to normalize relations between the U.S. and Cuba. Secretary of State Rex Tillerson says the U.S. may close the embassy over a host of unexplained health problems that embassy workers are suffering, including hearing loss and brain injury. The health problems appear to be caused by some form of sonic attack. Cuban officials deny any involvement in the apparent sonic attack and are cooperating with U.S. officials to investigate the incidents.