President Joe Biden is expected to fall short of his commitment to shipping 80 million COVID-19 vaccine doses abroad by the end of June because of regulatory and other hurdles, officials said as they announced new plans Monday for sharing the shots globally. The White House announced the final allocations for the doses, with 60 million shots going to the global COVAX vaccine-sharing alliance and 20 million being directed to specific partners. But fewer than 10 million doses have been shipped around the world …