WASHINGTON (AP) — Dick Cheney was the public face of the George W. Bush administration's boundary-pushing approach to surveillance and intelligence collection in the years after the attacks on Sept. 11, 2001.

An unabashed proponent of broad executive power in the name of national security, Cheney placed himself at the center of the public debate over detention, interrogation and spying that endures two decades later.

“I do think the security state that we have today is very much a product of our reaction to Sept. 11, and obviously Vice President Cheney was right smack-dab in the middle of how that reaction was operationalized from the White House,” said Stephen Vladeck, a Georgetown University law professor.

Prominent booster of the Patriot Act

Cheney was arguably the Republican admini

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