a state constitutional amendment that would prohibit “forced participation in a health care system,”
Medicaid/Medicare Tax ...
As near as I can determine, neither of which are "mandatory", except that the States have been brow beaten into participating in Medicaid. The Medicare "tax" is all but a lost cause since the federales have almost unlimited powers to tax. Not sure if they can or do force oldsters to join the healthcare "program" once reaching 65. But since we've all been saddled with the taxes for most of our working lives, whaddaya gonna do when you hit 65?