A major GOP donor says he may stop giving money to Republican lawmakers if they refuse to pass a bill providing protections for recipients of the Deferred Action for Childhood Arrivals (DACA) program.

David MacNeil, who gave President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE's inaugural committee more than $1 million, says he'll cut off funding to any Republican not in favor of a solution for keeping the so-called Dreamers in the U.S.

“I’m saying this as a political donor who’s donated seven figures in the last couple of years: I will not donate any more money to anyone who doesn’t support DACA, period,” MacNeil told Politico. “I’m putting my money where my mouth is.”

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A second pro-immigrant businessman, John Rowe, also told the newspaper this week that he would stop donating to lawmakers who don't back a Democratic-led effort in the House to mandate a vote on immigration bills.

The former Exelon chairman and Illinois GOP donor said the issue "determines how much money I’m giving" to members of the state's delegation, none of whom have yet joined with Democrats on a discharge petition to go around House leadership on the matter.

MacNeil has reportedly sent a letter to staffers for GOP Rep. Peter Roskam Peter James RoskamBottom line Lobbying world House votes to temporarily repeal Trump SALT deduction cap MORE (Ill.) personally requesting he approve the measure, which conservative members of the House Freedom Caucus have strongly opposed.

Rep. Carlos Curbelo Carlos Luis CurbeloGOP wants more vision, policy from Trump at convention Mucarsel-Powell, Giménez to battle for Florida swing district The Memo: GOP cringes at new Trump race controversy MORE (Fla.), a moderate Republican in support of the petition, wants lawmakers of both parties to reach a deal on immigration by the end of the week.