The book from former Republican congressman and House January 6 select committee adviser Denver Riggleman says the connection was an outgoing call routed through the switchboard at 4.34pm, and it was answered by an unnamed rioter who allegedly has since been charged by the justice department with a role in the storming of the Capitol.
The Latinos for Trump president, Bianca Gracia, had a total of five connections with White House root numbers starting 202-881 or 202-456, the book said: she placed four outgoing calls and received one incoming call.
Among other possible explanations, the sources said, was that she may have been in touch with a person on the Trump campaign or a person helping organize the Ellipse rally, or perhaps the White House may have reached Gracia when she had a tour of the complex around Christmas.
Schwartz has denied any such role.
Though most of the texts sent to and from Meadows that the book includes have previously been reported by CNN and others, the book fills in some gaps about the effort to object to the certification as well as the additional role played by Republican members of Congress.
