N/a. I prefer vouchers and tax credits.
Vouchers and credit will be required, imo.
Universal catastrophic insurance is a reasonable solution, and it could be brought to life with Medicaid-for-all policies. However, the citizens have no assurance that universal catastrophic insurance won't devolve into luxurious spendthrift. Refundable tax credits create incentives to purchase insurance and reduce insurance costs. Refundable tax credits are one of DC's least favorite "expenditures" (sad) so the program will probably have less cost-corruption.