President Joe Biden is expected to sign an executive order on immigration as early as this week, according to sources familiar with the decision. The long-awaited executive order would limit the number of migrants that would be allowed to claim asylum at the southern U.S. border.... It would immediately send them back to their country of origin to wait until the daily average goes down and, once it goes down, they would be able to claim asylum, according to a source familiar. The daily number o