He had been the communications chief of the National Endowment for the Arts before stepping aside amid conservative groups furor over a conference call they charge was an effort to push President Obama's agenda.
It also comes after an unending assault from bloggers as well a commentators like Glenn Beck and Rush Limbaugh, as well as inquiries from Republican congressmen.
The NEA issued a statement, per ABC News: "This afternoon Yosi Sergant submitted his resignation from the National Endowment for the Arts. His resignation has been accepted and is effective immediately."
The White House issued a statement earlier this week pledging new guidelines to ensure that a wall is kept between its agenda and that of other agencies. Update: The new guidelines are here.
Sergant had left his post earlier this month but remained at the agency in another unspecified post.