This Oct. 2003 photo, supplied by the University of Michigan, shows University of Michigan Professor Robert M. Groves, selected by President Barack Obama to be the next census director. President Barack Obama's pick to lead the Census Bureau is pledging to stand up to congressional Republicans _ and the White House if necessary _ and to stick to sound science when leading the high-stakes head count. If he cannot, he will resign, nominee Robert M. Groves said.