Teachers unions have had a "muscular" presence in some states, but in others, especially in the South and Southwest, the unions have held little power in recent decades, and the growing dominance of conservative Republicans in state legislatures and statehouses was creating a hostile environment with right-to-work (RTW) laws. The "Janus v. AFCSME" decision upheld laws that prohibited unions from collecting "agency fees" or "fair share fees" from non-members to help support the collective bargaining done on their behalf. Although most states that had RTW laws did so in the 1940s and '50s, a new wave of such legislation arose in the 2000s, beginning in Oklahoma in 2001. Indeed, seven states adopted new RTW laws after 2000, including West Virginia, Oklahoma, and Kentucky, all three of which experienced large-scale teacher walkouts in the spring of 2018. The authors surmise that it is possible that the recent flurry of state-focused teacher protests will prove to be a short-lived spasm of resistance that does not stem the steady and continuing decline of unions. But a number of factors hint at a different narrative, in which the unions adjust their strategies in ways that not only minimize damage but provide them with new energy, sense of purpose, and a stronger set of alliances. In this article they speculate about what the recent teacher actions might augur in terms of teachers-union strategies in the post-"Janus" era. [For "Will Unions Shift Their Focus to the Statehouse? Forum: After the Teacher Walkouts," see EJ1199916.]