Cocaine found inside White House sparks Secret Service investigation - National
Suspicious powder found at the White House when Biden was gone was cocaine, AP sources say
Cocaine in West Wing: Fireman Discovers Cocaine at White House
Secondary test of powder found in West Wing lobby shows it's cocaine, Biden briefed on investigation
Probe into cocaine found at White House closes with no suspect, Drugs News
Cocaine in the White House: a brief history, US news
Secret Service investigating suspected cocaine found inside White House complex - ABC News
Why the Secret Service closed its investigation of cocaine found at the White House without conducting interviews
Secret Service ends investigation into cocaine found at White House