 The Department of Justice is appealing the ruling, which it said went against the uniform conclusion of all previous courts. Mr Biden also described as a mistake the choice of the word bullseye in reference to his predecessor in a recent phone call. The director of the U.S. Secret Service has described the assassination attempt on Saturday as unacceptable, but said she would not resign. Kimberly Cheetle said it was her responsibility to investigate what went wrong to make sure nothing like it could happen again.