Trump has often boasted that in his first day of office as president, he will start building a “big, beautiful, powerful wall” on the border with Mexico and start sending millions of undocumented immigrants back south. That will be a problem for the construction industry, which relies heavily on undocumented laborers.
On the day after the election, I visited a construction site in the Research Triangle area of North Carolina, where a cluster of big tech and science companies have opened offices, making it one of the fastest growing metro areas in the country. About 70 percent of the state’s construction workforce is made up of immigrant laborers...