Notwithstanding any other provision of law and in coordination with the Federal Deposit Insurance Corporation, the National Credit Union Administration Board may by a vote of the Board increase to unlimited, or such lower amount as the Board approves, the share insurance coverage provided by the National Credit Union Share Insurance Fund on any noninterest-bearing transaction account in any federally insured credit union without exception, provided that any such increase shall terminate not later than .December 31, 20202020-12-31