“After all, what other political appointee has had to endure the kind of hate Holder has suffered? As a Mustached American, he has had to battle for his job against the haters from the start of his career,” the group writes.

Holder is at the center of one of a series of controversies for the Obama administration this week, including the revelation that the Justice Department obtained phone records for Associated Press employees. Holder testified before the House Judiciary Committee on Wednesday in the case.

The Institute, which says on its website that it aims to promote “the growth, care, and culture of the mustache,” concludes its open note by saying, “We at the American Mustache Institute call for an end to this obvious discrimination. There is indeed much to be done to clean up Washington. Let us not start with Eric HolderEric Himpton HolderHouse easily passes prison reform bill backed by Trump On Trump and DOJ, both liberals and conservatives are missing the point Holder: DOJ, FBI should reject Trump's requests MORE’s ruggedly handsome face.”