Before I explain Father Vaughn Treco's situation, please listen to this sermon that he preached on November 25, 2018 - the Solemnity of Christ the King.
This sermon was an honest and factual assessment of some root causes of the mess in which the Church finds herself. I for one detected no hint of heresy nor dissent. Sometimes the truth is hard but it must be proclaimed for the good of souls.
Father is the former parochial vicar of the Church of St Bede the Venerable in St Louis Park, MN. On account of the sermon that you just heard, he has been relieved of his position, his faculties have been suspended and he is even threatened with excommunication by Bishop Steven Lopez.
Please go to the Complicit Clergy site to see how you can support Father. One thing immediately needs to be done: call Bishop Lopez at 713-609-9292. He must right the wrong that he did to Father Treco and reinstate him immediately.