Frank Wuco, a former conservative talk radio host who was the White House adviser to the Department of Homeland Security, also has promoted conspiracy theories -- a history that drew criticism last year but appears to have not affected his role in the administration.
Wuco's hiring at State was first reported by The Washington Post.
Wuco's now a senior adviser in State's Arms Control, Verification and Compliance Bureau, traveling just last Friday to Romania to meet with Defense Ministry officials. It's unclear what his role is exactly. The State Department didn't respond when queried by ABC News.
Important to note, his position may align with his boss's. President Donald Trump also has openly mused about deploying weapons stronger than nuclear weapons against the Taliban in Afghanistan, although it's unclear what those would be.
Last year, Wuco came under heavy criticism after CNN resurfaced several instances of him promoting conspiracy theories on talk radio, including that former President Barack Obama was not born in the U.S., that former CIA Director John Brennan converted to Islam, that former Hillary Clinton aide Huma Abedin is a member of the Muslim Brotherhood and that former Attorney General Eric Holder was a Black Panther member.
The State Department is facing other personnel issues with arms control, as there's no assistant secretary leading the bureau, nor an undersecretary for Arms Control and International Security Affairs.
It comes at one of the most critical times for arms control policy, with China strengthening its military, Russia expanding its missile inventory, persistent nuclear challenges with Iran and North Korea, more countries from the Middle East to East Asia weighing the pursuit of nuclear weapons, and Cold War-era arms-control pacts like the Intermediate-Range Nuclear Forces Treaty collapsing.