The investigation, which centers on renovations of the Federal Reserve's headquarters in Washington, signals an escalation in the long-running clash between President Trump and the chair.
President Trump's comments were a blunt distillation of his administration's racial politics, which rest on the belief that white people have become the real victims of discrimination in America.
Delcy RodrÃguez got American help with the return of an oil tanker linked to one of her political rivals that had left the country without authorization.
Ex-law enforcement officials said the administration's declarations that the killing was justified elicited questions about the F.B.I.'s willingness to scrutinize the agent who fatally shot an unarmed activist.
The Department of Homeland Security posted a clip of the video on social media and said it was taken by the agent, who killed a 37-year-old woman in the shooting.
The opera, which has performed at the arts center since 1971, was concerned by declines in attendance and donations during President Trump's second term.