John Yoo writes for Foxnews.com, October 12, 2012
Although the Constitution is silent on border control and immigration, the Supreme Court declared long ago that these authorities reside with Congress. Congress has passed an extensive Immigration and Naturalization Act, which specifies the limited cases where the executive branch can suspend the removal of illegal aliens. The act does not give the president the authority to interrupt the deportation of whole classes of illegal aliens, and certainly nothing approaching one million.