We'll be discerning his motives forever

The CBS News report that Roberts had originally sided with the four conservative SCOTUS justices and subsequently switched is going to engender an avalanche of speculation.  So far, anyway, I can't think of a single theory that doesn't reflect poorly on his integrity as a jurist.  His reasoning was too tortured and, as we've seen since, too susceptible to being ignored by a regime that, now that it's squeaked by the Court, wants nothing to do with the tax characterization, for me to think he felt like he was on solid intellectual ground.