The security teams of the companies met with representatives from the Federal Bureau of Investigation, the Office of the Director of National Intelligence, and the Department of Homeland Security at Facebook's headquarter in Menlo Park, California."The purpose was to build on previous discussions and further strengthen strategic collaboration regarding the security of the 2020 U.S. state, federal, and presidential elections," Nathaniel Gleicher, Facebook's head of cybersecurity policy said in a statement.