What happens when a president puts himself above the law?

What happens when a president puts himself above the law?

A witness told  congressional committee that it's possible the people might decide it's time for a change. 

 

During a congressional committee hearing about the constitutional limits imposed on the presidency and the implications of President Barack Obama’s disregard for implementing the Affordable Care Act as written, one expert testified that the consequences of the president’s behavior were potentially grave. He said that the precedent set by Obama could eventually lead to an armed revolt against the federal government.