Do state powers have the authority to coin money and regulate its value
According to the United States Constitution, only the federal government has the authority to coin money and regulate its value. The Coinage Clause, found in Article I, Section 8, grants Congress the power to "coin Money, regulate the Value thereof, and of foreign Coin." This authority was specifically given to the federal government to ensure a uniform and consistent monetary system throughout the country.
However, individual states are prohibited from coining their own money or issuing their own currency. The Constitution also prohibits states from making anything but gold and silver coin a tender in payment of debts. This is known as the "Legal Tender Clause" and is found in Article I, Section 10.
In summary, while states have certain powers and authorities, including the ability to regulate commerce within their borders, the power to coin money and regulate its value is explicitly given to the federal government by the Constitution.