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

WASHINGTON -- One year ago, the attempted assassination of then-presidential candidate Donald Trump in Butler, Pennsylvania, marked a pivotal and deeply troubling moment for the nation-and especially for the U.S. Secret Service, the agency charged with protecting America's top leaders.

A “cascade of preventable failures” within the U.S. Secret Service nearly cost President Donald Trump his life during a campaign rally in Pennsylvania last year, according to a Senate committee

Comperatore, a devout Christian who adored his family and two Dobermans, died while shielding his wife and daughters from bullets fired by would-be assassin Thomas Matthew Crooks, 20, who had been perched atop the rooftop of a building adjacent to the rally stage last July 13.

Still reveling in his political comeback after surviving two near-miss assassination attempts, last December, then-President-elect Trump stopped by the Christmas party of the Secret Service

Butler' author Salena Zito recounts witnessing the assassination attempt on President Trump, and his belief that God played a role in saving his life.

A Senate report eviscerated the Secret Service on the one-year anniversary of the attempt on the president’s life at a rally in Pennsylvania.