The executive branch checks the legislative and judicial branches by implementing and enforcing laws passed by the legislative branch and by appointing judges to the judicial branch.
The powers of the executive branch include enforcing laws, appointing officials, administering programs, making foreign policy, and serving as commander-in-chief of the military.
Disobeying an executive order can result in legal consequences, such as fines or imprisonment, depending on the nature of the order and the circumstances of the disobedience.