> We find substantial evidence that immigration by foreign-trained nurses increases the supply of nurses and that this increase in supply is associated with a decrease in annual earnings. Estimates suggest that a 10 percent increase in supply due to immigration is associated with a one to four percent decrease in annual earnings.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3243945/
> We find substantial evidence that immigration by foreign-trained nurses increases the supply of nurses and that this increase in supply is associated with a decrease in annual earnings. Estimates suggest that a 10 percent increase in supply due to immigration is associated with a one to four percent decrease in annual earnings.