A major tool in the Left's propaganda in support of ILLEGAL ALIENS is that the time honored term "immigrant" has been co-opted as a synonym for "illegal".
Most Americans in 21st Century America have an immigrant in the family tree. So, by co-opting the term "immigrant", the Left wants to have America think that illegal aliens are as traditionally American as Mom, apple pie and Joe DiMaggio.
I am an immigrant. I am not illegal.
The people in question are ILLEGAL aliens. They are not "immigrants".
Embryonic cell stem = cell stem
It's not new, of course, as this way of deception started long time ago:
Forbidden fruit = All fruits in this garden.
The whole piece is from the same old dog-eared play book. Really, at some point these people are going to have to stumble upon some new material.