Have you not been paying attention at all?
For example, Trump's tariffs by Executive Order rest on there being declared emergencies under the International Emergency Economic Powers Act (1977). The administration even gives the detail here, https://www.whitehouse.gov/fact-sheets/2025/04/fact-sheet-president-donald-j-trump-declares-national-emergency-to-increase-our-competitive-edge-protect-our-sovereignty-and-strengthen-our-national-and-economic-security/
Similarly, all the fuss about Fentanyl from Canada and Mexico was to manufacture an emergency to allow Executive Orders.
The Reichstag Fire Decree rested on existing law pressed to extremes. The same is true of Trump's Executive Orders.