Congress invited 2 of the big name White House economists who shepherded the stimulus package to testify in its defense. They didn’t show:
Christina Romer left her White House position a few months back, so I'd think she'd have time for this sort of thing.
Jared Bernstein still is in his position as Chief Economist and Economic Policy Advisor to Vice President Biden. Of course, given that his degrees are in music, social work and two in social welfare, he may not feel that he has sufficient expertise in economics to have a meaningful position.
Photo via Café Hayek.