Storm Brewin'

Congress is the First Branch - First Among Equals. Congress sets the course - basically issues the orders - and POTUS carries it out. The Executive executes.

When a president decides he'll go against the mandates of Congress, he creates undue tension in the balance of power.

Then if the courts rule against him, and if he does his usual stall-and-ignore, it sets up a possible full-blown constitutional crisis. Which I think is exactly what Trump is angling for.

Short term, we're "only" looking at a shutdown fight. But it pays to be wary of these "minor" scuffles.