WASHINGTON (AP) — Interior Secretary Ryan Zinke and House Republicans have escalated their feud with Patagonia after the outdoor retailer told Americans that President Donald Trump “stole your land” in his move to shrink two sprawling Utah national monuments.

The dispute pitting the GOP against a private company raised questions about use of taxpayer resources for political criticism and whether Republicans are trying to stop Patagonia sales weeks before the Christmas holiday.

On the day of Trump’s announcement about the monuments, the California-based retailer replaced its usual home page last week with a black screen and stark message: “The President Stole Your Land.” Patagonia filed suit to block the planned reduction to Utah’s Bears Ears National Monument.

In a tweet, the House Natural Resources Committee said Patagonia is “lying” and making the allegation about Trump’s plan “to sell more products to wealthy elitist urban dwellers from New York to San Francisco.”

The Republican-led committee also sent out a widely distributed email with the subject line, “Patagonia: don’t buy it.”

A committee spokesman said Monday the email was not urging a boycott of Patagonia, but rather was telling consumers, “Don’t buy the lies” about Trump’s plan.

Patagonia’s lawsuit, filed in conjunction with a rock climbing advocacy group and other organizations, is among a flurry of lawsuits that have been filed over Trump’s move to reduce the size of Bears Ears by nearly 85 percent and cut in half the land protected in Utah’s Grand Staircase-Escalante National Monument.

The company said it spent years supporting groups creating other national monuments and directly lobbied for protections at Bears Ears.

Zinke accused Patagonia of lying about Trump’s actions and retweeted the committee post on his official account.

In response, former government ethics chief Walter Shaub launched a tweet storm, saying Zinke “misused his official position by re-tweeting this wildly inappropriate tweet.”

Shaub, who resigned in July as head of the Office of Government Ethics after repeated battles with the Trump administration, called Zinke “the poster child for this lawless administration’s misuse of governmental authority & resources.”

Zinke’s “thuggish interference with a business is outside the scope of his duties, raising a question as to whether a sovereign immunity defense might fail” if Patagonia sues him for libel or slander, Shaub said.

The committee may have violated House rules against advertising for or against a private individual, firm or corporation, Shaub said.

“The federal govt officially and publicly calling a company a liar for political reasons is a bizarre and dangerous departure from civic norms. It’s also decidedly anti-free market,” he tweeted.