The U.S. has dropped to number 12 in the
2014 Index of Economic Freedom.
Further, it has dropped every year since Obama has become president.
U.S. national debt has increased 64% since Obama was inaugurated, and if nothing changes (and it won't) it will increase over 100% to somewhere in excess of 20 trillion on its current trajectory before Obama leaves office.
Rising debt, expanded government authority, and excessive regulation are the primary reasons for the drop in economic freedom.