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Clinton collects key Boston endorsement, launches $275 billion infrastructure plan

Boston Mayor Marty Walsh endorsed Hillary Clinton at a charged rally in historic Faneuil Hall Sunday.

Democratic presidential candidate Hillary Clinton greets people in a crowd before a rally, "Hard Hats for Hillary," at Faneuil Hall, Nov. 29, 2015, in Boston. (Photo by Steven Senne/AP)
Democratic presidential candidate Hillary Clinton greets people in a crowd before a rally, "Hard Hats for Hillary," at Faneuil Hall, Nov. 29, 2015, in Boston. AP

Alex Seitz-Wald