January 28, 2017, a citizen wrote a letter to city hall opposed to Sanctuary City 
January 30, 2017 Belinda Griswold did a public records request on all correspondence related to Sanctuary City. 
February 9, 2017 Matt McDowell, a member of Sanctuary City, sent letter to city and directly to the citizen. It states - in a direct cut and paste with name and email removed:
Dear Mayor Callison,
Langley resident XXX XXX — in an email addressed to you, dated January 28, 2017, and shared with the Sanctuary Langley mailing list — states:
On Jan 28, 2017, at 3:06 PM, XXX XXX:
In light of President Trump’s Executive Order and further intent regarding so-called "sanctuary cities," I feel that the City of Langley’s interests would best be served by NOT enacting an ordinance declaring Langley, Washington a “sanctuary city.” (emphasis author’s)
 [Matt McDowell  goes on to rebut line by line the email.  He is a representative of Sanctuary City and got the email from Sanctuary Langley mailing list]