It won't make much difference. The US has a lot of problem, but "not spending enough money" isn't one.

The US government spend a lot on healthcare ($5.3 in 2024)[0]. More than most European countries per capita. But many people still feel that the US hardly has healthcare at all. Pouring more money without a full structural overhaul will likely make things worse.

And the $2T you mentioned is investors' money, which means that your plan is actually to increase tax by $2T and pour it into a system proven inefficient.

[0]: https://www.healthaffairs.org/doi/10.1377/hlthaff.2025.01683