The mayor of Boston said the city won’t be following New York’s lead requiring proof of vaccination at many indoor businesses, claiming the move is reminiscent of “slavery” and birtherism. Acting Mayor Kim Janey — the first woman and black Bostonian to hold the office — said “there’s a long history” in the United States of people “needing to show their papers” when asked Tuesday about the mandate unveiled earlier in the day by Mayor Bill de Blasio that requires proof of vaccination to enter indoor restaurants, entertainment venues and gyms starting on Sept. 13. “During slavery, post-slavery, as recent...