View of the metal fence along the border in Sonoyta, Sonora state, northern Mexico, between the Altar desert in Mexico and the Arizona desert in the United States, on March 27, 2017.
Threatened species like the Sonoran pronghorn or desert bighorn sheep freely cross the border between Mexico and the United States in protected biospheres, but the construction of US President Donald Trump's wall will block their movement in these desert valleys and could drive them to extinction. / AFP PHOTO / PEDRO PARDO        (Photo credit should read PEDRO PARDO/AFP/Getty Images)
PEDRO PARDO/AFP/Getty Images
View of the metal fence along the border in Sonoyta, Sonora state, northern Mexico, between the Altar desert in Mexico and the Arizona desert in the United States, on March 27, 2017. Threatened species like the Sonoran pronghorn or desert bighorn sheep freely cross the border between Mexico and the United States in protected biospheres, but the construction of US President Donald Trump's wall will block their movement in these desert valleys and could drive them to extinction. / AFP PHOTO / PEDRO PARDO (Photo credit should read PEDRO PARDO/AFP/Getty Images)
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(CNN) —  

A company touted by White House officials – and that’s already building sections of border wall for a private group with Trump administration ties – has been awarded $400 million by the government to design and build part of President Donald Trump’s border barrier in Yuma County, Arizona.

The Pentagon on Monday announced that North Dakota company Fisher Sand and Gravel was awarded a contract to “design-build border infrastructure along the southern perimeter of the Cabeza Prieta National Wildlife Refuge” in Arizona by the end of 2020. The company had previously been approved by the Pentagon as an eligible vendor for wall projects.

Fisher Sand and Gravel is currently building roughly 3 miles of wall on private land for the private group We Build the Wall, which backs the President’s push for erecting a barrier along the southern border. A number of the President’s supporters are part of We Build the Wall, including former White House adviser Steve Bannon and former Kansas Secretary of State Kris Kobach.

The Pentagon announcement is the first government contract to Fisher to build part of the administration-funded border barrier, which has formed a centerpiece of Trump’s platform. News of Fisher’s contract with the US Army Corps of Engineers was also tweeted on Monday by Brian Kolfage, who runs We Build the Wall.

While the President has publicly touted Fisher in the past, the company has a history of red flags – including more than $1 million in fines for environmental and tax violations. A decade ago, a former co-owner of the company pleaded guilty to tax fraud and was sentenced to prison.

The company also admitted to defrauding the federal government by impeding the IRS. The former executive, who’s a brother of the current company owner, is no longer associated with Fisher.

Asked by CNN in May to comment on the company’s history of environmental violations and legal issues, the company said in a statement: “The questions you are asking have nothing to do with the excellent product and work that Fisher is proposing with regard to protecting America’s southern border. The issues and situations in your email were resolved years ago. None of those matters are outstanding today.”

Fisher, which was founded in North Dakota in 1952, has enjoyed public support from North Dakota Republican Sen. Kevin Cramer – who as a congressman invited the company’s CEO, Tommy Fisher, to Trump’s State of the Union address in 2018.

News of the company’s contract with the Pentagon follows the company push to raise its public profile through lobbying efforts.

In recent years, Fisher’s congressional lobbying expenditures jumped significantly – from $5,000 in 2017 to $75,000 in 2018, according to data compiled by the Center for Responsive Politics, a nonprofit that tracks lobbying expenditures.

CNN’s Priscilla Alvarez, Clare Foran and Paul LeBlanc contributed to this report.