President Donald Trump has called courts unfair and political and repeatedly assailed the 9th Circuit, the U.S. court system's westernmost division, where some of his key immigration policies have stalled.
But is there any evidence politics plays a role in judicial opinions? An Associated Press review suggests it might.
The AP looked at opinions by nearly 40 federal district court and appellate judges about Trump's ban on travelers from mostly Muslim countries. It found only one judge nominated by a Democratic president has supported Trump's authority to keep out all travelers or deport those who arrived just as the first ban took effect. With some exceptions, Republican nominees have taken a broader view of presidential power and rejected limits on the executive orders.