President Donald Trump dismissed all members of the supposedly non-partisan Advisory Committee on Historical Diplomatic Documentation via email sent last month.

“On behalf of President Donald Trump, I am writing to inform you that your position on the Advisory Committee on Historical Diplomatic Documentation is terminated effective immediately,” White House liaison to the State Department Cate Dillon wrote in one of the dismissal emails, the Washington Post reported.

No reason was given by Dillon, according to the outlet. However, after former committee member and Canadian-American historian Timothy Naftali announced his dismissal on X, critics on the right pointed to past statements they viewed as evidence of his anti-Trump and anti-American bias.

The Advisory Committee on Historical Diplomatic Documentation guides the State Department on the publication of the Foreign Relations of the United States (FRUS) series, the official documentary record of U.S. foreign policy, according to the Office of the Historian.

The committee is responsible for ensuring that all papers, letters, and reports included in the FRUS series are carefully selected, accurately reflect historical events, and are published in a timely manner. It also oversees the proper declassification and public release of relevant documents.

Naftali isn’t the only former member facing scrutiny for alleged anti-Trump and anti-American bias. The committee’s chairman, James Goldgeier—a professor at American University’s School of International Service—has also come under similar criticism.

Goldgeier was especially critical of Trump during the COVID pandemic and Black Lives Matter riots of 2020.