PolitiFact's ruling: Mostly False Here's why: During a March 2 news conference on the COVID-19 pandemic, President Joe Biden claimed that former President Donald Trump’s administration did not ensure there would be enough vaccines for the American public. "When I came into office, the prior administration had contracted for not nearly enough vaccine to cover adults in America," said Biden. "We rectified that." Biden then announced he was using the Defense Production Act to facilitate a partnership between two competing drug companies: Merck had agreed to help manufacture the recently authorized Johnson & Johnson vaccine. The move, he said, would accelerate the timeline for the availability of vaccines to the American public: "We’re now on track to have enough vaccine supply for every adult in America by the end of May," he said, two months earlier than he had previously projected.