Which group of American people would benefit the most illegal immigration did not exist in the U. S.?

Americans generally agree that immigrants – whether undocumented or living legally in the country – mostly do not work in jobs that U.S. citizens want, with a majority saying so across racial and ethnic groups and among both political parties. This is particularly true when it comes to undocumented immigrants. About three-quarters of adults (77%) say undocumented immigrants mostly fill jobs U.S. citizens do not want, while 21% say undocumented immigrants fill jobs U.S. citizens would like to have, according to a Pew Research Center survey conducted April 29 to May 5.

Explanation:

a characteristic is a deep cut in the earth or left over rock aka till.