Not quite sending asylum seekers to sanctuary cities, but recently a group in TX sent some migrants to Portland, ME. Why Portland? The reason appears to be that they had a good reputation for assisting African refugees and hence that reputation caused some to ask to go to Portland (presumably also African but coming via the US Southern border
Portland's human resources director criticizes comments by Mayor Ethan Strimling welcoming the arrival of more immigrants.
Meanwhile other cities like Albuquerque also seeing how they might assist. In this case, the largest city in the state assisting when they know areas further south like Las Cruces have many people coming in.