Amazon argued in a court filing on Thursday that the National Labor Relations Board is unconstitutional as part of an ongoing case against the company for retaliation against unionized workers. It is the third company to do so in recent months, joining Trader Joe’s and Elon Musk’s SpaceX. The NLRB is investigating numerous unfair labor practice charges against Amazon for its anti-union activity at JFK8, the famed Staten Island warehouse that became the first in the U.S. to unionize in 2022. Desp...