Answer:
Immigrants make important contributions to the United States.
Step-by-step explanation:
The United States of America is a well known country for giving home to millions of people form other countries. Also, science contribution are ofter achieved by this population in the U.S., and Nobel Prize is an example of it.
For example, in 2016, 6 of 7 laureates where not born in the U.S. And if you consider only science and economy fields, 6 of 6 are immigrant.