By Chris Isidore
Source: CNN Business

You might not know Sean O’Brien. But he is poised to shake up the US economy in a way no one else has in recent memory.

O’Brien was sworn in Tuesday as the new general president of the 1.3-million member International Brotherhood of Teamsters, succeeding James Hoffa, son of the union’s most infamous president. The younger Hoffa held the job 23 years, far longer than his father ran the union.

O’Brien, a self-described “militant,” is vowing to take a much harsher line with employers than his predecessor did. And that could lead to a strike at the nation’s largest union employer when the Teamsters’ UPS contract expires on July 31 2023.

If that happens, it would be the nation’s largest and most disruptive strike in several decades.

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