The Supreme Court may soon decide how courts are supposed to view presidential power in the age of Donald Trump.

The administration has promised a high court appeal of a ruling blocking the president's ban on visitors from six majority Muslim countries. The case could be a major test for the young administration and for a court that has its 5-4 conservative majority restored with the confirmation of Trump nominee Neil Gorsuch as the ninth justice.

First, the justices must agree to intervene – something they'll probably do considering the importance of the issue. If so, then they will be dealing with an area of the law, immigration, where courts have given presidents a lot of leeway.