Trump takes heat from Hispanic conservatives
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BOULDER, Colo. — Donald TrumpDonald John TrumpBiden campaign slams Facebook after thousands of ads blocked by platform's pre-election blackout Mnuchin says he learned of Pelosi's letter to him about stimulus talks 'in the press' Harris to travel to Texas Friday after polls show tie between Trump, Biden MORE is taking heat from Hispanic conservative activists ahead of his appearance at the third Republican presidential debate Wednesday. 

The celebrity real estate tycoon has been atop polls for the GOP nomination for three months, despite a summer laden with controversy over his remarks on immigrants.
Some Hispanic groups who are supportive of Republicans are now openly blasting the businessman, and putting other candidates on notice to stay away from his rhetoric. 
"We believe that if Donald Trump is the GOP nominee, none of us will support him, none of us will help him engage the Hispanic community," Alfonso Aguilar, director of American Principles Project’s Latino Partnership, told The Hill ahead of the debate.
"We are ostracizing him," he added.
Aguilar and leaders from several other Hispanic conservative groups met privately Tuesday afternoon in Boulder, the site of the debate, to discuss Trump's positions on immigration. 
“Heed our warning: Don’t expect us to come to your side during the general election. If you are not with us now, we will not be with you then," former Treasury Secretary Rosario Marin, an official in the George W. Bush administration, said during a press conference Tuesday. 
Ending birthright citizenship and discussing a mass deportation of the around 12 million undocumented immigrants in the U.S. were key issues where Trump has failed, Aguilar said. 
The groups stopped short of naming other candidates with similar positions to Trump, such as Sen. Ted CruzRafael (Ted) Edward CruzHarris to travel to Texas Friday after polls show tie between Trump, Biden Cruz wants donors to repay K he loaned to his 2018 campaign Why Biden could actually win Texas MORE (R-Texas), who has largely embraced Trump during the 2016 campaign. 
"We are concerned. We're more than concerned — we're angry with the rhetoric and tone some candidates are using," Aguilar said, alluding to other GOP candidates besides Trump.
The groups acknowledge that party officials may not like them going after a front-runner. 
"They're afraid, and that's fine," Aguilar said. 
Other groups present Tuesday included the Hispanic Leadership Fund and the National Hispanic Christian Leadership Conference, among others. 
Organizers acknowledged the importance of raising the issue in Colorado, a state with a growing Hispanic population the GOP hopes to put into play again in 2016. 
The coalition will hold its next meeting Dec. 14, on the eve of the final GOP debate of the year in Las Vegas, where they may call out other candidates for their positions on immigration. 
"We are going to continue monitoring what they are saying," Aguilar said of the candidates.