Start Covid vaccine at Southern Border before mandating Americans

So, Biden has the Southern borders pouring with illegal immigrants that have diseases we are not aware of .
Why not mandate them to have Covid vaccine?
Why wouldn’t the “Wizard of Oz (DC)” want TAXPAYERS to be safe from unknown diseases .
Stop our mandates and put some on these illegals that are going to illegally vote DEMOCRAT, use all our resources that our VETERANS need.