Medicaid is different and is healthcare welfare. Some deserve assistance; many don't and those many consider it a free ride like welfare.
Also, the fact that Medicaid was and is mismanaged. Mismanaged means not accounting for inflation (a dollar 50 years ago is not the same dollar as today), increased medical costs (not accounting for inflation), fewer people paying into the fund (fewer workers, more retirees), politicians stealing from the fund, fraud, we are living longer which means that we will require more $ than we put into the fund.
All of the above will result in the fund running short sometime in the future.