Ahead of tonight's GOP presidential debate, Hispanic Republicans are warning White House hopefuls to tone down the rhetoric regarding immigration. NBC News reports:

A coalition of Latino conservative activists warned the Republican presidential field on Tuesday to ditch Donald Trump's rhetoric on immigration, or they risk losing the election.

"Heed our warning: don't expect us to come to your side during the general election," said Rosario Marín, who served as Treasurer under former President George W. Bush. "If you are not with us now, we won't be with you then. If you insult us now, we will be deaf to you then. If you take us for granted now, we will not recognize you then."

Marín was flanked by nearly two dozen other activists, small business owners and elected officials who met earlier that day in Boulder as part of an event organized by the American Principles Project's Latino Partnership to discuss the upcoming election. The group said they weren't endorsing any candidate, but were unified in their opposition to one: Trump.

Although others in the group named Trump, Marín refused to say his name and instead decried the "nonstop vitriolic insults" from "a wannabe politician." 

Meanwhile, National Review confirms that Congressman Paul Ryan has promised that once he is speaker of the House, he will block any immigration reform package that does not have support of a majority of House Republicans, ensuring that comprehensive immigration reform is going nowhere in Congress:

Paul Ryan has signed off on a letter promising restless members of the House Freedom Caucus (HFC) that he won’t bring immigration-reform legislation to the House floor while President Obama remains in office. The letter, obtained exclusively by National Review, formalizes pledges that Ryan made last week in a closed-door meeting with select members of the HFC who were skeptical of his promise to maintain an “open” and “inclusive” relationship with the caucus. Specifically, it extracts Ryan’s word that he will not bring up comprehensive immigration reform “so long as Barack Obama is president” and, as speaker, Ryan will not allow any immigration bill to reach the floor for a vote unless a “majority” of GOP members support it.