Secret Service implements tougher penalties after probe finds agents were on phones and missed intruder at national security adviser's home

The US Secret Service implemented tougher disciplinary measures after preliminary findings from an internal investigation found agents missed an intruder at national security adviser Jake Sullivan's home in part because they were using their personal phones, people briefed on the matter said.Secret Service Director Kimberly Cheatle in recent days ordered increased penalties for employees who violate policies on duty, including the use of personal devices while on the job.

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