James Wallner writes at the Library of Law & Liberty:
"Restoring the Constitution’s institutional foundation, though, requires that all branches take an active part. Congress, the executive, and the judiciary must each act to defend its institutional role against encroachments into its sphere by the others. For starters, Congress must reassert its Article I authority vis-à-vis the President and the courts. Lawmakers must summon the institutional will to employ their considerable powers in defense of their primary role in making policy. Armed with the determination to act, Congress can conduct rigorous oversight of the administration to ensure that the laws it wrote are being faithfully executed. It can also use its power of the purse to prohibit the President from doing things it opposes...."