Senior Secret Service officials knew of a “classified threat” against President Trump 10 days before an assassination attempt in Butler, Pennsylvania.

"This report reveals a disturbing pattern of communication failures and negligence that culminated in a preventable tragedy," Sen. Rand Paul wrote in the report.

Kimberly A. Cheatle, who resigned after Donald J. Trump was grazed by a bullet as a candidate a year ago, pushed back against findings in a Senate report released on Sunday.

President Donald Trump still faces a plethora of threats, ranging from violent extremists backed by proxy groups, to domestic actors inspired to incite violence amid heightened political rhetoric, according to experts.