When the U.S. returned Yemen’s Houthi movement to its list of Foreign Terrorist Organizations on Mar. 4, the decision not only reversed the Biden Administration policy—it also reignited debates over U.

The formal decision to label the Yemeni militant group reverses President Joe Biden’s delisting in 2021, after more than a year of attacks on U.S. Navy and commercial vessels.

The U.S. State Department on Tuesday said it was implementing the designation of Yemen's Iran-aligned Houthi movement as a "foreign terrorist organization" after President Donald Trump's call for the move earlier this year.