Earlier Wednesday, the commission said national security adviser Condoleezza Rice had declined its request to testify at a public hearing next month.
"We are disappointed by this decision," commission members said in a statement. "We believe the nation would be well served by the contribution she can make to public understanding of the intelligence and policy issues being examined by the commission."
Rice met privately with the panel February 7.
The statement also asked Bush and Vice President Dick Cheney to reconsider their decision to be questioned only by the commission's chairman, former New Jersey Gov. Tom Kean, a Republican, and its vice chairman, former Indiana Rep. Lee Hamilton, a Democrat.
The statement said Bush and Cheney "prefer not to meet with all members of the commission."
Former President Bill Clinton and former Vice President Al Gore have agreed to meet privately with all members of the commission, the statement said.