WASHINGTON - Key senators in both parties and the White House announced agreement Thursday on an immigration overhaul that would grant quick legal status to millions of illegal immigrants already in the U.S. and fortify the border. The plan would create a temporary worker program to bring new arrivals to the U.S and a separate program to cover agricultural workers. Skills and education-level would for the first time be weighted over family connections in deciding whether future immigrants should get permanent legal status. New high-tech employment verification measures also would be instituted to ensure that workers are here legally. The...