The US government has spent the past week assessing a report of a leak at a Chinese nuclear power plant, after a French company that part owns and helps operate it warned of an "imminent radiological threat," according to US officials and documents reviewed by CNN.

The Department of Defense inspector general has issued a scathing review of Rep. Ronny Jackson during his time serving as the top White House physician, concluding that he made "sexual and denigrating" comments about a female subordinate, violated the policy for drinking alcohol while on a presidential trip and took prescription-strength sleeping medication that prompted concerns from his colleagues about his ability to provide proper care.

As threats continue to mount against members of Congress, concern is growing about the safety of some lawmakers when they travel outside Washington and the security bubble it provides, multiple sources told CNN.

National Security Agency General Counsel Michael Ellis, who was installed by former President Donald Trump during his final days in office, was put on administrative leave Wednesday because his appointment is now the subject of a Department of Defense inspector general investigation, a source familiar with the investigation told CNN.

A review of US Capitol security in the wake of the January 6 insurrection is set to recommend a series of sweeping changes next week intended to better protect lawmakers while they are in Washington, DC, and at home, according to two sources with direct knowledge of the findings.

Law enforcement officials told lawmakers Tuesday they were prepared for the possibility of limited violence on January 6 at the US Capitol, but the intelligence available ahead of time did not warn of a coordinated attack like the insurrection that overwhelmed officers and led to multiple casualties.