Analysis: Why Roberts saved Obama’s healthcare law

WASHINGTON (Reuters) – In the end, it all came down to Chief Justice John Roberts, the sphinx in the center chair, who in a stunning decision wove together competing rationales to uphold President Barack Obama's healthcare plan. Roberts' action instantly upended the conventional wisdom that he would vote with his four fellow conservative justices on the U.S. Supreme Court and undercut the agenda of a Democratic president, who as a senator in 2005 had opposed Roberts' appointment to the bench. …