And you could easily exempt out of college immunizations.You are right and wrong. The "you are paving the way to the mark" argument is a tired argument. As a Christian I believe this will occur in God's timing and Christians are not endanger of receiving a mark.
This is no different than vaccinations to attend college. My son had to get a few shots and provide his shot record to be a resident student.
People should do the same to attend certain venues.
You are way too willing to sacrifice liberty.
The slippery slope "fallacy" is in fact true. "Conservative" Christians like you are going to soon look back up that slope and wonder what happened!