The Washington Post reports Chinese government hackers are suspected of breaching the computer networks of the United States Postal Service, compromising the data of more than 800,000 employees — including the postmaster general’s. The intrusion was discovered in mid-September, said officials, who declined to comment on who was thought to be responsible. The FBI is leading the investigation into the hack. The news, announced by U.S. Postal Service, came as President Obama arrived Monday in Beijing for high-level talks with his counterpart, President Xi Jinping, as well as for an economic summit.