After further reading, I've learned that the membership is much smaller than I had thought. The Teamsters Freight division, which includes other roles like doc

After further reading, I've learned that the membership is much smaller than I had thought. The Teamsters Freight division, which includes other roles like dockworkers and mechanics, seems to only have 75,000 members.[^1] In 2019, the US Census Bureau reported there were 3.5M truckers. So you're probably right. [1]: https://www.teamstersjc42.com/about/trades/ https://www.teamstersjc42.com/about/trades/ [2]: https://www.census.gov/library/stories/2019/06/america-keeps-on-trucking.html https://www.census.gov/library/stories/2019/06/america-keeps...