Building contractors who have placed bids on the Trump border wall are already receiving death threats.

And the federal government has not even awarded any contracts yet.

Yahoo reported:

Trump repeatedly said during the campaign that Mexico would pay for the wall, but he has since requested that Congress approve billions of dollars in U.S. taxpayer funds. Democrats vow to oppose any wall funding, and many Republicans are also wary of his plans for a massive brick-and-mortar barrier.

The Border Patrol and local police would establish a buffer zone around the construction site if necessary, the U.S. official said. The San Diego police and sheriff’s departments said Monday they will respect constitutional rights to free speech and assembly for any peaceful, law-abiding protesters.

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Enrique Morones, executive director of Border Angels, said his group plans to protest.

“There will be a lot of different activity — protests, prayer vigils — on both sides of the wall,” said Morones, whose immigrant advocacy group is based in San Diego. “We pray and hope that they’re peaceful.”

Michael Evangelista-Ysasaga, chief executive of The Penna Group LLC, a general contractor in Fort Worth, Texas, said he has received about a dozen death threats since publicly expressing interest in bidding, including one from a woman who told him she hired a private investigator to trail him.

Evangelista-Ysasaga said he bid in part because he wants broad immigration reform. Securing the border, he said, is a prerequisite for granting a path to citizenship to millions in the U.S. illegally.

“We didn’t enter this lightly,” he said. “We looked at it and said we have to be a productive part of the solution.”

Building a wall on the Mexican border was a cornerstone of Trump’s presidential campaign and a flashpoint for his detractors. The multibillion-dollar project along the 2,000-mile border has many outspoken critics, including the Roman Catholic Archdiocese of Mexico, which said last week that Mexican companies expressing interest were betraying their country.