This isn't some generic political stance Twitter is taking, it is challenging a specific CBP order directed at Twitter. So which specific incident(s) relating

This isn't some generic political stance Twitter is taking, it is challenging a specific CBP order directed at Twitter. So which specific incident(s) relating to Twitter during Obama's administration are you referring to? Otherwise this seems like the typical "but Obama" handwaving. Side note, I think you're using "backing down" in the opposite sense of how it's meant to be used. Saying they "never backed down" means they took a strong stand.