Rep. Don Bacon of Nebraska is the first known lawmaker to have their email account hacked in an alleged Chinese espionage campaign . Bacon sits on the House Armed Services and Agriculture committees two issues of prime interest to Chinese policymakers . The FBI told Bacon he was a victim of the hack on Monday . The hackers had access to Bacons personal and campaign emails for a month according to a post on X the social media site formerly known as Twitter . Bacons vocal support for Taiwan the selfgoverning island that China considers its territory and his criticism of Chinas persecution of the Uyghur minority group are two possible reasons the hackers may have been interested in Bacons emails . The Chinese foreign ministry previously responded to Microsofts assessment that Chinabased hackers were behind the campaign by accusing Washington of conducting its own hacking operations . The intrusions began in midMay when the hackers used a stolen signin key to burrow their way into email accounts . The hacking campaign coincided with Secretary of State Antony Blinkens visit to Beijing in midJune has raised tensions between US and Chinese diplomats . Lawmakers from both parties and chambers have called for investigations into how the breach occurred and how it has impacted federal agencies . The Department of Homeland Security said last week that it was investigating the root causes of the breach. The FBI declined to comment when contacted by Tuesday . An FBI spokesperson declined to commented on the alleged hack of Bacons. An FBI spokesman declined to . to comment on the incident. The attack on Bacons or to comment for the alleged attack. The breach. An analyst in mid June. to be a spokesperson for the FBI declined. to comment. The State Department declined to speak to a spokesperson. An official declined to clarify. An earlier version of this article