Many people over the years, including former President Franklin D. Roosevelt, have said that public employee unions should not have the power, indirectly, to basically elect their bosses as they have been doing for many decades.
That concern seems to have been lessened by the Supreme Court's decision in the Janus vs. AFSCME case. The Supreme Court, by a 5 to 4 vote, ruled that public employee unions cannot force state and local government workers to pay union dues (called “Agency Fees”) who do not want to join the union. The decision does not affect the existence of private employee unions.