Question: Wade F. Horn served as Commissioner of Children, Youth, and Families within the Administration under an American politician who was previously a congressman, ambassador, and director of what?
Sentence (from "Mark Everson"): Mark Whitty Everson (born September 10, 1954) is an American politician who is currently the Vice Chairman of alliantgroup and served as the 46th Commissioner of Internal Revenue from 2003 until 2007.
Relevant evidence: No