No he is not - He has a history of activism and support of immigrants with pro-bono work, he also was wrong:

http://www.seattletimes.com/nation-world/nation-politics/ap-fact-check-no-arrests-from-7-nations-in-travel-ban-nope/

The "plaintiffs" chose him to ensure they would at least get it through to the 9th Circuit. The law is clear, the President has the authority to make this order, that is crystal clear, and the DOJ attorney yesterday completely dropped the ball arguing the case, which was partly due to Sessions not being confirmed, The Trump administration should have waited until they had their cabinet in place before making this order.