Millions of undocumented people in the U.S. should be given a path to legal status after the country finds a way to stop illegal immigration, business and government leaders said in a report Wednesday. The University of Denver report argues that legalizing as many of the estimated 12 million undocumented immigrants as possible could strengthen the economy and national security. But it should come with conditions, such as requiring new immigrants to learn English, pass criminal and medical background checks, and pay any taxes that they owe, the document states. The report is the product of a year of discussions...