We are afraid of immigration because there is so few housing that bringing people will just add to the pressure and make rents even more ridiculously expensive . Also, in my country (Portugal), these workers accept working for less and live in miserable conditions (overcrowded homes, tents outside of Lisbon, etc), making it worse for everyone else, causing an exodus of qualified people and a flood of “tourism workers” because salaries just not increase when there are people accepting to work for less.
Meanwhile our public services are collapsing left and right because qualified people just leave and there are so many new people trying to access public healthcare etc.
This is not the black and white immigration is good/bad you are making it out to be .
Yes, they can. I have a scale that is able to tell fat and muscle mass apart