There's only one entity responsible for the total shit show of the vaccination situation:

Government Accountability Office report on Trump's handling of pandemic finds programs never implemented and money gone missing (note: check Trump's pockets)

The GAO report makes it clear, at length, that the Trump response was inadequate in every way. There was a failure to provide a national testing plan, a failure to provide national guidelines, a failure to account for billions distributed through a questionable process, and a failure to protect essential workers even when they were forced to remain on the job.

https://www.dailykos.com/stories/2021/2/3/2013742/-GAO-issues-340-page-report-on-Trump-s-handling-of-the-COVID-19-pandemic-deeply-troubled