There is no such rule. There is a vague, misinterpreted, intimidating rule of man ... the tax man, IRS ... that they don’t want you to speak politically from the pulpit. Did Mr. Myrick not know that since, and before, the founding of this nation, thundering voices clamoring for liberty, demanding liberty, demanding the political force, the king, get out of our way. Did Mr. Myrick not know that the Black-Robed Regiment spoke with thundering voices demanding that the people take up arms to defend liberty and rid themselves of a tyrannical government. Did Mr. Myrick forget that it was pastors, led by Dr. Martin Luther King, Jr. that demanded equality with thundering voices from the pulpit, and one corrupt politician, Lyndon Baines Johnson, tried to stop it. Pastors, except for the clergy of the black community, have been intimidated by the IRS and political correctness, and a cowering flock. But ... there is no rule of life inhibiting politics from the pulpit ... to the contrary the rule of life is “in the face of tyranny, a silent pulpit is a complicit pulpit.”
One may not agree with his politics, but thanks to the Rev. Crowley for speaking out and demanding that the clergy exercise their God given right to speak politically.
"Stop judging, that you may not be judged. For as you judge, so will you be judged, and the measure with which you measure will be measured out to you. Why do you notice the splinter in your brother's eye, but do not perceive the wooden beam in your own eye? How can you say to your brother, 'Let me remove that splinter from your eye,' while the wooden beam is in your eye? You hypocrite, remove the wooden beam from your eye first; then you will see clearly to remove the splinter from your brother's eye." -Matthew 7:1-5