Donald Trump Paints Republicans Into Corner With Hispanics: Republicans thought they had learned a lesson after 2012: Turning off Latino voters ensures defeat in the general election.

But as the disruptive presidential candidacy of Donald J. Trump continues to gain support, his hard line on immigration has driven rivals to match his biting anti-immigrant language and positions long considered extreme. It risks another general election cycle in which Hispanics view the party as unfriendly no matter who the nominee is, Republican strategists warned.

This week, several of Mr. Trump’s Republican rivals, including Gov. Scott Walker of Wisconsin, echoed his call to end automatic citizenship for the American-born children of undocumented immigrants, repealing a constitutional right dating from the Civil War era.

And Mr. Trump’s plan for mass deportations — “They have to go,” he said — which is supported by a sizable minority of Republican voters nationwide, has encouraged rivals to similarly push the edges on immigration.