President Obama recently shifted authority for approving sales to China of missile and space technology from the White House to the Commerce Department -- a move critics say will loosen export controls and potentially benefit Chinese missile development. "It's as though Commerce's mishandling of missile-tech transfers to China in the 1990s never happened," said Mr. Sokolski, a former Pentagon proliferation specialist. "But it did. As a result, we are now facing much more accurate, reliable missiles from China." Mr. Sokolski said he expects the U.S. government under the new policy to again boost Chinese military modernization through "whatever renewed 'benign'...