The Unitarian Universalist Church of Marblehead will launch its 2019 Meetinghouse Speaker Series with a deep dive into the immigration situation at the U.S. southern border on Feb. 3 from 4-6 p.m. Alexandra PiƱeros Shields, Aviva Chomsky and others with firsthand knowledge of U.S. immigration history, policy, and relations with Central America will delve into what has brought the U.S. to the current situation. Why are people fleeing Central America? What is President Trump doing regarding refugees and asylum, and why? What challenges do immigrants face in Massachusetts, and what can people do to support immigrants?