Nonetheless, alt-right leaders said they planned to use their newfound influence to pressure Mr. Trump to take more “heretical” policy positions, such as a moratorium on net immigration for the next 50 years. White Europeans, Mr. Spencer said, would be given preference.
“In the long run, people like Bannon and Trump will be open to the clarity of our ideas,” said Jared Taylor, the founder of the white nationalist publication American Renaissance.
Like Mr. Trump, Mr. Spencer, who has become the face of the alt-right, derided NATO as “clumsy and ineffective.” He called for friendlier relations with the Russian president, Vladimir V. Putin, and for the deportation of undocumented immigrants, drawing chants of “build that wall.”
“I think moving forward the alt-right as an intellectual vanguard can complete Trump,” Mr. Spencer said. “We can be the ones who are out front, who are thinking about things that he hasn’t grasped yet.”
Join the conversation as a VIP Member