United States: who is Kyrsten Sinema the dissident Senator who ditched Biden’s vote reform

In a Senate with such narrow margins, the president of the United States is a woman: Kyrsten Sinema. His no to the reform of the ‘filibuster’, a tool in the hands of the minority to block a law from being put to a vote, froze the White House and infuriated the Democrats. Progressive Senate candidates for the November elections are setting the campaign on the slogan: “I will be the 50th vote.”