Because they are beholden to the multicultural fantasy, same as the EUro-socialists who bring in millions of Muslims. Beholden to ethnic pressure groups particularly pro-immigration ones. Pro-illegal immigration ones too. Non country club Republicans (you and me) are solid against this dilution of America
"same as the EUro-socialists who bring in millions of Muslims"
During the cold war, didn't the W. Germans allow Turks to come to live in W. Germany because they had a shortage of workers?
Then, when the wall fell and E. and W. Germany reunified, there were now lots of former E. Germans who needed work and the Turks decided to stay and the Germans tried to kick them out? I have no idea how that whole situation has turned out.