U.S. Marines lay barbed wire barricades at US/Mexico border entry point

U.S. Marines placed barbed wire barricades across three lanes at the San Ysidro Port of Entry, on the Mexican border, on November 13, as part of Operation Secure Line, to prepare for the arrival of a migrant caravan.

• At 5,800 troops, the military force at the U.S. border with Mexico may have peaked: commander