Among officials at the construction site Tuesday was Assistant San Diego police Chief Dave Nisleit and a Border Patrol spokesperson from Washington.
Supervisor Greg Cox said it is important for the county to take precautionary measures since the federal government is moving forward with building prototypes for the border wall proposed by President Donald Trump. Eight companies were chosen to build eight different border wall prototypes.
In its most recent effort to dispel further confusion, Mexico's Ministry of Foreign Affairs wrote in a statement late last month, "As the Mexican government has always stated, our country will not pay, under any circumstances, for a wall or physical barrier built on USA territory along the Mexican border".More news: New US travel ban "psychological terrorism": Venezuela
A green tarp hanging on a chain-link fence blocked views of the work, which is expected to last 30 days.
Agents - and Mr. Trump - say visibility through the wall is critical for knowing what's going on in Mexico, helping agents avoid ambushes or other potential dangers, as well as spot migrants or smugglers preparing to try to cross.
"It may not result in a singular victor". Congress has appropriated funds this year to fix southern border barriers using previously approved designs, but these structures are better described as "fences". Another 300 miles have vehicle barriers, which allow easy penetration by pedestrians or animals but are created to stop trucks and cars from barreling over the border.More news: Spain to send extra police to try to halt Catalan referendum
As agents prepared for the news conference, a Mexican man breached the fence, cut his hand and was arrested.
One group that is voicing opposition to the border wall concept is Alliance San Diego. There is also pending legal action, including a lawsuit filed by the California State Attorney General. Both waivers are in California, including one that covers the site of prototype construction.
Funding to extend the wall beyond its distance of 1,046 kilometres is in doubt. Contracts for prototypes of other materials were awarded to KWR Construction Inc. of Sierra Vista, Arizona, and ELTA North America Inc. of Annapolis Junction, Maryland.More news: DHS: Colorado's election system targeted but not breached by Russian activity