Frustration is building with the rollout of the coronavirus vaccine. The Trump administration had pledged 20 million doses of the vaccine by year's end, but so far, not even 3 million shots have been given and just over 11 million doses have been shipped. President-elect Joe Biden suggested Tuesday that the Trump administration has overpromised and under-delivered. Mr. Biden noted that at the current pace, it would take years to vaccinate the country against COVID-19. Mr. Biden vowed to accelerate the pace of vaccinations and boost Americans' confidence in the shots once he is sworn in next month.