Was going to title this "Driving the immigration issue or forcing immigrants to pick a side." Anyone that's read the nbci article on vaccination? This one's simple. They mention the measles outbreak a while back. What they dont mention is most of it was immigrants. You push that issue and the left will start "proselytizing" immigrants on vaccinations. This leads to three possible outcomes: 1. the immigrants agree with vaxx, redpilling rightwing americans, most of whom are just 90s Democrats stuck on "immigration is fine as long as its LEGAL." 2. Immigrants stand against vaxx, meaning in order to demonize the unjabbed the state has to demonize half their base and alienate their supporters in the process, which complicates their controls. 3. Immigrants split on this issue, which means that in turn the state's own supporters split. Probably the state unitary doubles down leading back to outcomes one or two. Raise the immigrant vaccination question every chance you get.