Simply stated, an unconstitutional government is one that does not follow, or is not consistent with, or ignores the constitution of that country. If the government continues to perform unconstitutional acts and ignores the set up of the constitution, it is an unconstitutional government. Under the United States Constitution, the government may do something which may later be declared unconstitutional by the courts. If the government continues to ignore the decision of the court, then the government is acting in an unconstitutional way. If a military coup takes over control of a government and does away with the current constitution, without the consent of the people, it is acting as an unconstitutional government.
This is a ridiculous question, obviously a constitutional government has a constitution that is the basis for it's law. An unconstitutional government does not.
No, it would be unconstitutional
The Judicial Branch has the power to declare laws unconstitutional.
The Judicial Branch
~ Unconstitutional ~
The Judicial Branch can declare an act of the President unconstitutional.
The Judicial Branch has the power to declare the acts unconstitutional.