It was the first time the United States had announced a strike on Iran-backed forces in Iraq since they launched a flurry of attacks against US targets in response to Washington's support for Israel.
The World Health Organization estimates that in a country of 43 million, there are just two mental health workers for every 100,000 Iraqis.
The videos showed dozens of men climbing over the fence at the complex, with the sound of them trying to break down a front door. Another showed what appeared to be a small fire being set.
U.S. officials cite multiple reasons for the delays, including an attack on the U.S. Embassy in Baghdad, a hack of a refugee database, the pandemic and cuts to the refugee programme.