The January 2025 Confirmation Vote
Reflecting on the tense late-night hours of Jan. 24, 2025, Tillis details the internal debate that led him to support Hegseth’s nomination despite harboring early skepticism. He writes that he weighed discussions with the White House, individuals who had worked alongside Hegseth, and Hegseth himself. Unable at the time to fully corroborate the worst allegations regarding Hegseth’s management style, treatment of women, and drinking habits—allegations that Hegseth has consistently denied—Tillis cast a pivotal vote that resulted in a 50-50 tie, which Vice President JD Vance subsequently broke.
In his book, Tillis explains that he chose not to be “the lone voice in the wilderness” attempting to block nominees alone, while noting that at least 30 of his Republican colleagues privately expressed severe reservations about various administration actions while publicly praising them. Beyond Hegseth and Kennedy, Tillis trains his criticism on several other early cabinet picks, including former Director of National Intelligence Tulsi Gabbard, former Homeland Security Secretary Kristi Noem, and Commerce Secretary Howard Lutnick.
A Critical Assessment of Pentagon Leadership
Elaborating on his regret during an appearance covered by MS NOW, Tillis described Hegseth as an actor rather than a manager, asserting that the defense secretary lacks foundational knowledge of the Department of Defense. Tillis criticized Hegseth’s administrative focus, arguing that the Pentagon chief fixates on service members’ physical appearance and grooming standards rather than broader operational readiness. According to Tillis, Hegseth concentrates on a fraction of the military apparatus at the expense of managing the globe’s most complex security organization.
This public break coincides with mounting legislative friction. Rep. Thomas Massie, R-Ky., has advanced a resolution to impeach Hegseth over alleged violations of the War Powers Resolution regarding ongoing military actions in Iran, an initiative that Tillis has indicated he would support. Tillis maintains that the conflict in Iran can only conclude through an international coalition and if Trump gets “Pete Hegseth the hell out of the way.”
The Breaking Point and Final Months in Office
The Cardinal & Pine reports that Tillis’s estrangement from the White House deepened significantly in June 2025, when he announced he would not seek reelection following sharp disagreements over the administration’s sweeping tax and spending cuts package, often referred to as H.R. 1. After Tillis objected to proposed Medicaid cuts, public attacks from Trump ensued, prompting the senator to conclude he was finished working within the party leadership’s legislative framework.
As he prepares to leave office, Tillis warns of a broader political toll, predicting a difficult midterm election cycle for Republicans and cautioning against executive overreach. Despite his sharp critiques of administration policies, tariffs, and immigration enforcement raids, Tillis largely insulates Trump from total blame, writing that his primary grievance lies with the president’s staff rather than Trump himself.