In a letter sent Tuesday night to committee chairman Jerrold Nadler, D-N.Y., after negotiations between the committee lawyers and Justice Department over accessing redacted portions of the report, Assistant Attorney General Stephen Boyd called the panel’s continued demands for materials “unreasonable” and urged them to delay Wednesday’s scheduled vote to initiate the contempt process.

“If the committee decides to proceed in spite of this request, however, the Attorney General will advise the President to make a protective assertion of executive privilege,” Boyd wrote.

Nadler responded sharply, calling the Justice Department’s continued obstruction of congressional oversight requests “dangerous.”