Earlier quoted context omitted.
San Francisco has also given homeless people one-way bus tickets to get rid of them. It's a common practice in many cities nationwide. https://www.theguardian.com/us-news/ng-interactive/2017/dec/...
As the article notes, cities usually only will do so if you both want to leave and have someone willing to take you in on the far end. If they just wanted to get rid of people they wouldn't worry about any of that.
Outside of the scope of the article, there are unofficial deportations that would not have a delineated process and wouldn't be reported.