Union membership in the United States fell last year to a new low even as the labor movement scored a string of significant victories at high-profile companies that have long evaded unionization, such as Amazon, Starbucks, Apple, Chipotle and Trader Joe’s.The U.S. Chamber of Commerce said in a statement last year that historically low union membership in the country “leaves much to be desired for organized labor leaders, to say the least,” and urged union leaders to “think of ways to improve their product” other than pushing for legal changes that make it easier for workers to join unions.Biden has taken extraordinary steps to support unions during his presidency, including inviting the leaders of new unions at Amazon and Starbucks to the White House in May, installing an advocate for workers to run the National Labor Relations Board (NLRB), and passing legislation that he says will create good-paying union jobs.Still, the White House found itself in an awkward position with railroad unions in November, after forcing a deal that thousands of unionized railroad workers had rejected.He noted Microsoft’s recent decision to take a neutral stance toward a union drive at video game giant Activision Blizzard ahead of a controversial attempt to acquire it."