Interesting - not technically U.S. soil - good catch and interesting find. I'm not going to get into the legal details, but keep in mind, the article is talking about asylum cases and the court case is talking about U.S. legal jurisdiction to bring relief - which makes the matter murky. I'm not saying you're wrong, however, just to be clear. But the details we can hammer out later.
However, that same article points out
So the violation of law is staggering clear. And in my opinion the response was very appropriate.Relevant articles in the text establish that embassies are immune from intrusion, damage or disturbance by the hosting country