President Donald Trump marked his visit to the new border wall in California on Wednesday, by signing his name on the steel fencing, calling it a “world-class security system.”

The president posted a video on his Twitter on Wednesday night, Sept. 18, that shows he was touring a section of the U.S.-Mexico border wall in San Diego’s Otay Mesa area.

The video highlights of the steel and concrete-filled bollards shows that they are currently under construction.

President Donald Trump capped a two-day trip to the West by penning his signature in magic marker on the San Diego wall at the Mexico border on Sept. 18, 2019. (AP Photo)

President Trump is seen talking and shaking hands with construction workers, and officials and staff from the U.S. Customs and Border Protection, Army Corps of Engineers, U.S. Border Patrol, and Department of Homeland Security beside the wall.

President Trump then penned his signature on the newly constructed border wall, and also encouraged others to sign the wall.

According to The Associated Press, the visit to San Diego border wall is the final stop of two-day journey to the West where President Trump shows details of the ongoing construction to reporters.

“It was like a sheet metal and people would just knock it over like just routinely,” the president said about the new wall, which would be 14 miles long and replace the old low fencing.

The president also praised features of the wall, calling it a “world-class security system.” He said the border agents now can see through the wall to spot possible threats on the Mexican side of the border.