While Congress had the right to regulate all forms of American currency, the Articles failed to call for a singular form of currency. This meant that the national government could print money, but each state could as well. Consequently, America had no uniform system of currency which made trade between the states, and with foreign entities, much more difficult and less efficient.
Railroad industry which now had laws Government conduct
Yes he was, he was justified because article two grants him authority to issue executive order.