With rain pelting down and a crowd of a supporters behind her with picket signs and umbrellas, Alma Barrios got on her knees and faced the agents in front of the Immigrations and Customs Enforcement office. "Agents of ICE, I plead, please, no more deportations," Barrios said in Spanish through a bullhorn, her voice quivering and tears streaming down her cheeks. "No more separation of families." Barrios was among more than 100 protesters at ICE’s Boston field office in Burlington. The Thursday vigil coincided with the passage of an immigration reform bill in the U.S. Senate that would grant temporary legal status to most of the country’s 11 million undocumented immigrants.