Reports indicate that President Obama has selected Second Circuit Court of Appeals Judge Sonia Sotomayor to replace David Souter on the Supreme Court. The announcement will be made formally this morning at 10:15 a.m. EST. This nomination should be judged principally on two grounds: (1) her judicial opinions (which Scotusblog's Tom Goldstein comprehensively reviews here) and (2) her answers at her confirmation hearing.