Dan Mitchinson: US correspondent on the Secret Service acting head being grilled in a hearing over security failures during Trump shooting - Heather du Plessis-Allan Drive

The acting head of the Secret Service was grilled in a lengthy hearing about the security failures that led to Donald Trump getting wounded during the infamous Pennsylvania rally.

At a lengthy US Senate hearing, Ronald Rowe outlined the ongoing investigation into the incident, including the lapses that led to the shooting.

US correspondent Dan Mitchinson said the hearing became quite tense, with plenty of shouting across the courtroom.

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