Trump’s unwavering backing of Juan Guaidó’s shadow government in Venezuela attaches a “made in the U.S.A.” label to all those positioned to govern should Maduro fall. This could scuttle the opposition's chances of maintaining longstanding support among the majority of Venezuelans.
A military coup d’état in Venezuela doesn’t seem likely so long as the Armed Forces support Maduro. Meanwhile, U.S. action will likely backfire, and serve only to strengthen those in power.