Chinese government hackers are suspected of breaching the U.S. Postal Service computers, gaining access to the personal information on some 800,000 employees. The hacking was discovered mid-September, and the FBI is investigating the breach. The USPS announced the hacking Monday, the same day that President Obama arrived in Beijing for talks with Chinese President Xi Jinping. Security breaches at the Office of Personnel Management and government contractor USIS earlier this year were linked to China. The country has consistently denied the allegations and says Chinese law forbids cybercrimes.