STEMigrant 

A foreign-born advanced U.S. degree holder able to fill highly specialized roles in science, technology, engineering, and math (STEM) fields for America's most innovative companies.

Many Silicon Valley workers are in fact STEMigrants.

STEMigrant by Intelligencer May 30, 2018

scamigrant 

An individual that comes in on a raft to claim housing and free money when they have no reason to need it.

Another load of Scamigrants washed up at Folkestone today.

scamigrant by Betty bopper March 26, 2023