Commentary For many decades now, the percentage of private-sector American workers who belong to a labor union has been declining. According to a Hoover Institution study by Richard A. Epstein, the percentage of unionized workers in the private sector has fallen from nearly 20 percent in 1983 to 6.2 percent in 2019. Attempts by union organizers to persuade employees to unionize have failed in such high-profile cases as the Tennessee Volkswagen plant in 2019, the Nissan plant in Canton, Ohio, in 2017, and the Alabama Amazon warehouse earlier this year. In the hope of reversing the long-term decline in union membership, President Joe Biden, House Speaker Nancy Pelosi (D-Calif.), and Senate Majority Leader Chuck Schumer (D-N.Y.) are pushing strongly for passage of legislation labeled Protecting the Right to Organize (PRO) Act. The intent of the PRO Act would be to radically change existing labor law to favor union organizers. Among …