A science envoy in the State Department resigned from his post in a letter to U.S. President Donald Trump and included a coded message in his statement.
Daniel Kamman, an energy professor at the University of California, Berkeley, sent his letter of resignation to Trump after Trump's comments on the situation in Charlottesville, Virginia, according to USA Today. Kamman had served in the science envoy since February 2016 and had held other roles in the federal government for 20 years.
But it wasn't necessarily what Kamman said in his letter that caused a stir, but rather what appeared to a coded message inside it. The first letters of each paragraph, put together, spelled out the word "IMPEACH."
Kamman was sharply critical of the president in his letter, particularly Trump's decision to withdraw the U.S. from the Paris Accord, the multi-national climate agreement.
"Your failure to condemn white supremacists and neo-Nazis has domestic and international ramifications," Kamman wrote.
"Particularly troubling to me is how your response to Charlottesville is consistent with a broader pattern of behavior that enables sexism and racism, and disregards the welfare of all Americans, the global community and the planet," he continued.
Neither Kamman nor any White House spokesperson commented on the letter after it became public. Kamman is one of seven listed science envoys in the State Department, each of whom serves a year's term. It was not clear if Kamman's resignation coincided with his regular job turnover.
"Acts and words matter," Kamman wrote in his letter. "To continue my role in your administration would be inconsistent with the principles of the United States Oath of Allegiance to which I adhere."
Kamman released an image of his statement through his personal Twitter account, where users were quick to point out the hidden "IMPEACH" message.
Resignations from Trump committees have come quickly since his comments about Charlottesville. The members of the Committee on the Arts and Humanities disbanded their panel and distanced themselves from the president during their resignation, according to The Hollywood Reporter. Their resignation letter also offered a hidden message -- "RESIST" -- in the first letters of each paragraph.
"I think the response to Charlottesville -- his response -- was the worst of who we are," said actor Kal Penn, who served as a member of the Arts and Humanities committee before it dissolved itself. "And we just felt like that was not who we are at all and we are better than that, and this was an opportunity to show that."