Republican senators are rallying around Stephen Miller after some GOP colleagues called for a White House shakeup, viewing the deputy chief of staff as a political liability ahead of the midterms. Sen. Lindsey Graham led the defense, arguing Miller's aggressive immigration stance and tough rhetoric on Greenland have positioned the U.S. to strengthen its Arctic defenses.

Graham dismissed concerns about Miller's influence, telling The Hill that Trump has "full faith" in his senior aide and that Miller is "Karl Rove to MAGA." More than a dozen Republican senators submitted on-the-record comments praising Miller's role in delivering on Trump's campaign promises, including securing borders and stopping fentanyl trafficking. Senators like Dave McCormick and Tom Cotton emphasized Miller's decade-long collaboration on national security issues.

However, internal tensions persist within the Senate GOP conference. Critics like Sen. Thom Tillis described Miller as having a "condescending demeanor" who "dictates" rather than advises, with several anonymous senators expressing concern that Miller's hardline positions on immigration enforcement are becoming national stories that could hurt Republicans in battleground states. Polls show growing public unease with ICE tactics, with 61-65% of Americans believing enforcement has gone too far, creating additional pressure on the party as Homeland Security funding faces a Friday deadline.