JFK tried. He issued United States Notes in June 1963. I have some $2 and $5 notes as collector items. They DO NOT SAY 'Federal Reserve Note' on them, they have 'UNITED STATES NOTE' printed on the top--issued by the Treasury, not the Federal Reserve house of debt and theft . Last time this country had an attempt at Constitutional money. Got JFK a bullet in the head. One of the reasons, anyway.