BOSTON — U.S. Sen. Elizabeth Warren is calling for the federal government to treat the opioid addiction crisis in a way similar to how it attacked the AIDS epidemic in the 1980s.The Massachusetts Democrat will be in Boston on Friday to discuss legislation that she and Maryland Democratic Rep. Elijah Cummings plan to file in Congress.The lawmakers plan to model the bill after the Ryan White CARE Act, which targeted federal funds to areas of the country most impacted by the HIV virus.