President Biden's widely recognized video distributed by Tweet on Sunday night was an unprecedented instance of direct support of a union in an ongoing organizational campaign by a sitting U.S. President.  While more than 6,000 mail ballots from employees at the Amazon warehouse facility in Bessemer, Alabama are being collected and counted, President Biden directly challenged Amazon management not to attempt to persuade workers to vote against union representation, calling for no "anti-union propaganda."  While endorsement of politicians by unions during federal and state elections is routine, Presidential involvement in a union representation election conducted by the National Labor Relations Board is "a major break with historical precedent," as reported by the Washington Post.  Since the National Labor Relations Board is a part of the Executive Branch, this unprecedented action also raises questions regarding whether the NLRB representation election process will remain neutral as designed under the National Labor Relations Act.