You are oversimplifying. Generally speaking, most of the work of SCOTUS is reigning in the Executive because of overzealous regulators. The US regulatory fram

You are oversimplifying. Generally speaking, most of the work of SCOTUS is reigning in the Executive because of overzealous regulators. The US regulatory framework is theoretically designed to be based in law, made by the legislature, not the whims of unelected bureaucracy. Congress delegating it’s power is suspect at best, and likely unconstitutional entirely (something something, War Powers Act). Congress created the EPA through the power of the purse, but it’s operated by the Executive, and therefore is not and should not be empowered to unilaterally create regulations with the force of law. Making law is Congress’ job.