I think he resigned after he got arrested.
Then if someone is trying to make the link between this guy and Porter I'm not seeing it.
DAILY MAIL.COM Obama policy adviser 'called autistic Native American man a "weetard" for wearing a Redskins sweater, spat in his face and then beat him so badly he needed THREE surgeries'
Barrett Dahl, 28, said William Mendoza assaulted him in October 2015 He says Mendoza the Dept of Education appointee hated his Redskins sweater Mendoza insulted, spat on and then assaulted him, he says Dahl was left with a black eye, broken teeth and a fractured arm. Dahl says $40,000 medical bills could mean foreclosure for his parents. Both Dahl and Mendoza are Native Americans
Read more: http://www.dailymail.co.uk/news/article-3747389/Obama-appointee-William-Mendoza-allegedly-beat-insulted-autistic-Barrett-Dahl-Dahl-wore-Redskins-sweater-Washington-DC-pow-wow.html#ixzz571Db8o9D