The meme is really about hypocrisy, open border supporters are fine with millions of potentially sick people going where ever they want when they want. Many of the same people demand every American kid that goes near their child have current vaccinations. School boards and power happy political hacks tend to back them up. You can't have it both ways, there is no way to know what someone has unless they are screened, open borders is a threat to everyone. Just because the corona virus is not as deadly as the media makes it out to be is not the issue. At some point a super bug could enter the USA and wreak havoc on us all. It will not matter what we do with legal visitors if others can walk in.