Donald J. Trump in his role as President, his Attorney General William P. Barr, are asserting dictatorial powers by asserting the doctrine of "unitary executive", by their misuse of executive privileges and emergency powers.
Complaint
This administration has refused to cooperate with Congress, respect the laws of the United States or the separation of powers, specifically, congresses power over the purse. Trump has stonewalled Congressional efforts to get information from his officers, barred his lieutenants from testifying on matters within the scope of the House's oversight functions, and claimed a fictitious version of Executive privilege to justify this stonewalling and lack of cooperation. As a consequence he has obstructed justice, diverted funds from their intended use, and broken a number of laws. More importantly he is usurping powers reserved to the legislature and asserting dictatorial powers by doing these things.