The U.S. Secret Service has placed multiple agents on leave, including the head of the Pittsburgh field office, as a result of its investigation into last month's assassination attempt against former President Donald Trump, according to a source familiar with the matter.  ...

Secret Service spokesman Anthony Guglielmi declined to confirm the agents were placed on leave, saying he would not comment on a personnel matter. But he said the service's "mission assurance review is progressing, and we are examining the processes, procedures and factors that led to this operational failure."