Why assume that getting to the remaining 40% means force? Most places are focusing on outreach.again as we’ve discussed if the variant risk is what you are worried about: a. That’s really an argument for forcing the remaining 40%...to get there though you’d have to remove the eu label first and I rather use soft incentives first and b. Worlds not finished until 2023 so unless you are going to finish trumps wall, shut the borders even to American citizens and ground the planes, you are worried about the horses after they’ve fled the barn.
but then you are a preacher so you worry about these silly little things rather than the big things because that’s what’s important to you.
As a practical matter, most places which care enough to do vaccine passports probably care enough to reach herd immunity without them.