Esteban Bullrich, a former senator and education minister, resigned from the PRO party on June 25, 2026 [1].

The departure of a high-profile former official signals a growing internal rift within the party over the ethical handling of government leadership and accountability.

Bullrich directed his criticisms toward the "blindaje," or political shielding, provided to Chief of Cabinet Manuel Adorni. Bullrich said the party acted out of political convenience by maintaining this protection despite existing accusations against Adorni [1], [2], [3].

In a letter addressed to Mauricio Macri, Bullrich detailed the reasons for his exit. He said, "permanecer en el partido implicaba aceptar silencios y decisiones con las que ya no podía identificarme" [1]. This suggests a fundamental break between Bullrich's personal convictions and the current strategic direction of the party leadership.

The resignation occurred amid tensions within the national Senate, where the protection of Adorni has become a focal point of contention [4]. Bullrich said he could no longer align himself with a party structure that prioritizes political survival over transparency.

While the PRO has not issued a formal rebuttal to the specific claims in Bullrich's letter, the event has drawn significant media attention. A live broadcast of the unfolding political situation on C5N ran for 24 hours [5].

Bullrich's exit marks a significant moment for the party, as he previously held key roles in both the legislature and the executive branch. His decision to leave publicly—rather than quietly—highlights the severity of the disagreement regarding the party's relationship with the current administration's cabinet [2].

“permanecer en el partido implicaba aceptar silencios y decisiones con las que ya no podía identificarme”

Bullrich's resignation underscores a tension between the PRO's desire to maintain a governing coalition and the demands for accountability regarding Manuel Adorni. By publicly breaking away, Bullrich challenges the party's internal discipline and suggests that the 'shielding' of government officials may be becoming a political liability that outweighs the benefits of party unity.