President Trump Donald John TrumpFederal prosecutor speaks out, says Barr 'has brought shame' on Justice Dept. Former Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick MORE will hold a campaign rally Thursday in Minneapolis, a city where he is now openly feuding with the mayor over the $530,000 in costs associated with the event.

Minneapolis Mayor Jacob Frey (D) triggered an onslaught of criticism from Trump when he said the president’s campaign would be on the hook for the more than half-million dollars in expenses.

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The Trump campaign responded by threatening a lawsuit, accusing the mayor of extortion and claiming Frey was attempting to restrict the First Amendment rights of the president and his supporters.

“Someone please tell the Radical Left Mayor of Minneapolis that he can’t price out Free Speech. Probably illegal!” Trump tweeted Tuesday.

“Someone tell the President of the United States that he can afford to help pay for the extra time our officers will be putting in while he’s in town,” responded Frey, a first-term mayor who has frequently ripped the president.

Trump campaign manager Brad Parscale Bradley (Brad) James ParscaleMORE said Tuesday that the Target Center had backed off canceling the event over the costs and that the rally would go forward as planned.

The fight has roots in the Trump campaign's history of unpaid bills to local municipalities after campaign events. But Tim Murtaugh, the Trump campaign's communications director, asserted that Secret Service, not the campaign, coordinates on any additional security needs and dismissed Frey's comments as political grandstanding.

“You tell me what the motivation is here after the guy’s been tweeting about how the president isn’t welcome,” Murtaugh said.

Trump seems to be landing in enemy territory with the Twin Cities visit.

His Target Center rally will take place in the congressional district of Rep. Ilhan Omar Ilhan OmarOmar urges Democrats to focus on nonvoters over 'disaffected Trump voters' Omar fires back at Trump over rally remarks: 'This is my country' Trump attacks Omar for criticizing US: 'How did you do where you came from?' MORE (D-Minn.), a frequent Trump critic.

The president came under bipartisan criticism earlier this year for a tweet that said Omar and three other first-year, female lawmakers should go back where they came from. All four are U.S. citizens of color; Omar is the only one born outside the United States. She is a refugee from Somalia.

A “send her back” chant directed at Omar during a North Carolina rally also drew heavy criticism for the president, and all eyes will be on Minneapolis to see if it is used on Thursday.

At the same time, Trump narrowly lost Minnesota in the 2016 presidential election, and it is one of just two or three states won by Democratic nominee Hillary Clinton Hillary Diane Rodham ClintonBloomberg rolls out M ad buy to boost Biden in Florida Hillicon Valley: Productivity, fatigue, cybersecurity emerge as top concerns amid pandemic | Facebook critics launch alternative oversight board | Google to temporarily bar election ads after polls close Trump pledges to make Juneteenth a federal holiday, designate KKK a terrorist group in pitch to Black voters MORE that Republicans think Trump might be able to flip in 2020.

Trump lost the state by just 1.5 percentage points in the 2016 election. Campaign officials cited the state's strong economy and Trump's ability to elevate Democrats who are unpopular statewide as factors that could boost his chances of winning Minnesota in 2020.

Vice President Pence will join Trump at the rally, and second lady Karen Pence Karen Sue PenceTrump met with chants of protest as he pays respects to Ruth Bader Ginsburg How fast population growth made Arizona a swing state The Hill's 12:30 Report - Presented by Facebook - Biden, Pence elbow bump at NYC Sept. 11 ceremony MORE and Trump's daughter-in-law Lara Trump Lara Lea TrumpHillicon Valley: Democrats demand answers over Russian interference bulletin | Google Cloud wins defense contract for cancer research | Cyberattack disrupts virtual classes Lara Trump campaigns with far-right activist candidate Laura Loomer in Florida Sunday shows - Democrats target Trump as violence flares MORE will attend a Women for Trump event on Wednesday.

“As a campaign, the most valuable thing we will ever have is the president's time. So the fact that he’s willing to go to Minnesota this early is a very strong indicator that we think we can win Minnesota," said Tim Murtaugh, the communications director for the Trump campaign.

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Trump has sought to elevate Omar and make her one of the faces of the Democratic Party. It’s a strategy he’s expected to employ in Minnesota, as Omar is less popular statewide than in Minneapolis.

“If Democrats are going to win in Minnesota they need to present a moderate image. Trump undermines that by elevating very liberal Democrats,” said Alex Conant, a GOP strategist who worked on presidential campaigns for Sen. Marco Rubio Marco Antonio RubioGOP lawmakers distance themselves from Trump comments on transfer of power McConnell pushes back on Trump: 'There will be an orderly transition' Graham vows GOP will accept election results after Trump comments MORE (R-Fla.) and former Minnesota Gov. Tim Pawlenty (R).

Omar's campaign sent out a fundraising email on Wednesday urging supporters to donate to her campaign ahead of the president's appearance in her home district.

“We can’t imagine what hateful, xenophobic lies he’ll feel emboldened to spread when he’s right in her district,” the email stated.

Conant said it will be an “uphill climb” for Trump to win Minnesota, noting that Democrats in the state outnumber Republicans.

But Trump lacked the unified GOP support in 2016 that he benefits from now, Conant noted, and the president could be further aided if Democrats tack too far left heading into next year's election.

“The sort of Democrats that tend to win statewide tend to look more like [Gov. Tim] Walz or [Sen. Amy] Klobuchar than [Massachusetts] Sen. [Elizabeth] Warren or Omar,” Conant said. “So I think by going into Rep. Omar’s district, he can paint the contrast that he needs if he’s going to win.”

In taking on Minneapolis and its mayor, Trump is adding to the municipalities with which he has feuded.

Trump has in recent months gone after the congressional representatives and local leaders of Baltimore, Dayton, Cincinnati, Oakland and San Francisco, seeking to paint urban centers as decaying and floundering under Democratic leadership.

Thursday also will mark Trump's first rally since House Democrats launched a formal impeachment inquiry late last month. Trump often veers off script at his rallies, presenting the possibility that he will lay out his rawest defense yet.