A Senator says a whistleblower told him that the Biden-Harris administration’s Secret Service denied repeated requests from law enforcement to secure former President Donald Trump’s Pennsylvania rally one day before a would-be assassin made an attempt on Trump’s life.

“According to one whistleblower, the night before the rally, U.S. Secret Service [USSS] repeatedly denied offers from a local law enforcement partner to utilize drone technology to secure the rally,” Sen. Josh Hawley, R-MO, wrote in a Thursday letter to Biden-Harris Secretary of Homeland Security Alejandro Mayorkas.

USSS is an agency of Mayorkas’ Department of Homeland Security (DHS).