The U.S. House Oversight and Government Reform Committee sent out letters to dozens of government agencies asking that each department provide documents and information on whether they used affected Juniper products, how each entity discovered the vulnerability, and if measures were taken before the Juniper patch was released following a December 2015 incident where an unauthorized code was found in Juniper’s ScreenOS firewall operating system (OS).
Several Federal government agencies included were the U.S. Securities and Exchange Commission, the U.S. Department of Health and Human Services, the U.S. Nuclear Regulatory Commission, and the U.S. Department of Transportation, among other agencies.
Source: http://www.securityweek.com/us-government-agencies-asked-about-juniper-backdoor-patching