I would add the Clintons' price-control scheme of the 90s that necessitated over seas purchases of vaccines in the first place:
It was sold to us as a way to get prices down and get more children vaccinated and, of course, to keep the evil drug companies from making a profit. The Wall Street Journal said, "Companies that decided to run these regulatory traps also know that they'll be doing so for very little reward. Before her big health care reform crashed and burned in '94, Hillary Clinton managed to get Congress to pass a government vaccine buying program for children. Her sales pitch was free vaccines for all kids and higher immunization rates. If we would give this stuff away, she said, more children would be immunized." . . . Thus, as a result of Hillary's plan, the government now purchases about 60% of all pediatric vaccines, forcing huge discounts and imposing price caps. The manufacturers were told, ''You can only make so much profit, and you're gonna make this amount, and we're gonna give it away.''
With the profit margin squeezed to practically zero, some manufacturers have simply said, "We're not making the stuff anymore. It doesn't make sense. We've got this government program that tells us the maximum we can charge, regardless what it costs to make, then we'll be sued the first time somebody gets sick from the vaccine."