Former President Donald J. Trump paved a path to the presidency in 2016 by calling for a “big, beautiful wall” along the United States border with Mexico.
His 2024 rivals in the Republican primary election, scrapping for every advantage against him, looked north.
Nikki Haley, the former governor of South Carolina, has frequently told voters that it’s not just the southern border that needs stepped-up enforcement — “it’s the northern border, too.”
