By NATE SCHWEBER, ANDREA BARNES, FRANCESCA REGALADO and CLAIRE FAHY Mayor Zohran Mamdani said on Saturday that he had spoken with President Donald Trump about obtaining a visa for the mother of a 15-year-old boy who was shot and killed in the Bronx last week. The boy, Javits Frimpong, a 10th grader at Dreamyard Preparatory School who moved to the Bronx from Ghana last year, was on his way to school on Thursday when he was shot in the abdomen near his home at around 9 a.m. He was pronounced…
