Some democrats ask Biden to *support a $25 billion investment in the production of roughly eight billion mRNA vaccine doses.*

Is that what we need? The words are not precise enough for me to tell.

Whatever vaccine production lines exist will surely keep running, producing vaccine, as long as there are people who want to be vaccinated. I expect funds will be found to pay for the vaccine and vaccinate someone or other. Pledging funds towards that will be necessary, but doing so in advance won't speed things up.

The way to funds to speed up vaccinating the world is by increasing the future rate of production: building more plants, sooner. If that's what this plan would do, I'm in favor of it.

So which one are they proposing to do with that money?

If it refers to this proposal, then it would be spent on boosting production. In that case, I'm in favor of it.