Defense Secretary Pete Hegseth and Thomas D. Homan, President Trump’s border czar, toured areas near Mexico. By Reyes Mata III and Eric Schmitt Reyes Mata III reported from the southwestern U.S.

DETROIT, MI — Michigan is at the “epicenter of a northern border crisis,” U.S. Rep. John James, R-Shelby Township, said at a Detroit event in June. But since President Donald Trump took office, ...

Lt. Col. Phillip Mason stood on a narrow peninsula in early April just west of downtown San Diego, overlooking the coastal border between the U.S. and Mexico as a seasonal fog obscured the view. Mason ...