"John Stolnis, spokesperson for the U.S. Capitol Police, told USA TODAY that oversight is complex.
"The United States Capitol Police (USCP) is overseen by the Capitol Police Board and has Congressional oversight by appropriations and authorizing committees from the U.S. House of Representatives and U.S. Senate," Stolnis wrote in an email.
Panels that oversee USCP are the House and Senate committees on Appropriations, the Subcommittee on the Legislative Branch; the Committee on House Administration and the Senate Committee on Rules and Administration.
Sens. Jack Reed, D-R.I. and Mike Braun, R-Ind., are chairperson and ranking member on the Senate side.
House authorizing committee chairman and ranking member are Reps. Zoe Lofgren, D-Calif., and Rodney Davis, R-Ill. Sen. Amy Klobuchar, D-Minn., and Roy Blunt, R-Mo., are chairperson and ranking member of the Senate committee. "
As you can see it was not Pelosi's personal role. The Capitol Police and the relevant people were not prepared for an attack launched by the President.
They didn't see the MAGA rally going south.
Pelosi was talking in general terms of the Congress and it's mechanisms.