To the first handful of US Presidents it was simply understood that only Congress had the exclusive right to enact laws, as noted in Article 1 Section 1 All legislative Powers herein granted shall be vested in a Congress of the United States, which shall consist of a Senate and House of Representatives. Among the original Executive Orders there is nothing legislative, only proclamations, dispositions and suggestions. Washingtons first Executive Order was to recommend that Thanksgiving take place on November 26th.
Starting with Lincoln, Executive Order power was treasonously employed in times of crisis to circumvent Congressional authority (e.g. suspending habeas corpus, gold confiscation). Article 2, Section 3 only states that the President has the authority under national emergencies to call Congress into session, not to enact legislation. Admittedly the two Roosevelts took this treasonous authority to never-before-seen heights.
In 1999, President Clinton issued Executive Orders declaring a national emergency in Yugoslavia, eventually to declare war against them without any Congressional authority. By GW Bushs time, he continued turning these Executive Order against the American population, seizing control not granted by the Constitution: all communications media, all power and fuels, all food and farm resources, all modes of transportation etc. This fine tradition has escalated under the current Administration.
Eventually Adolf Hitler used his executive orders privileged to turn Germany into a Nazi dictatorship. In particular, the Patriot Act would have made Hitler and Stalin extremely jealous. Yet somehow the American public continues in ignorance regarding the three branches of US govt, sadly too divided and distracted to notice the framework of a dictatorship.